| Team Name | Roster | League Name | Level | G | W | L | Pct | GBL | Rk | RF | RA | Diff | Manager | Ballpark |
| Washington Nationals | Stats -- Roster | National League | MLB | 162 | 93 | 69 | .574 | 4.0 | 0 | 873 | 724 | +149 | Dave Martinez | |
| Fresno Grizzlies | Stats -- Roster | Pacific Coast League | AAA | 134 | 65 | 75 | .464 | 8.0 | 3 | 823 | 920 | -97 | Randy Knorr | |
| Harrisburg Senators | Stats -- Roster | Eastern League | AA | 145 | 76 | 63 | .547 | 1.5 | 2 | 566 | 533 | +33 | Matt LeCroy | |
| Potomac Nationals | Stats -- Roster | Carolina League | A+ | 139 | 70 | 67 | .511 | 11.5 | 2 | 598 | 580 | +18 | Tripp Keister | |
| Hagerstown Suns | Stats -- Roster | South Atlantic League | A | 134 | 65 | 75 | .464 | 26.0 | 5 | 577 | 572 | +5 | Patrick Anderson | |
| Auburn Doubledays | Stats -- Roster | New York-Penn League | A- | 99 | 30 | 46 | .395 | 11.0 | 6 | 294 | 354 | -60 | Rocket Wheeler | |
| Gulf Coast Nationals | Stats -- Roster | Gulf Coast League | Rk | 95 | 26 | 23 | .531 | 1.5 | 3 | 249 | 211 | +38 | ||
| Organizational Totals: | 843 | 425 | 418 | .504 | 3980 | 3894 | +86 | |||||||
2019 Organizational Org Roster | Top | PREV | Major Leaguers | Active Players | 1st Round Draft Picks | Still Active on Roster |
| Player Name | Pos | Team(s) | Ht | Wt | B-T | BornDate | Age | Place | HiLvl | Stat Years | MLB Years | Draft Information | College(s) | Status | Current Org (Level) |
| Osvaldo Abreu | SS | Potomac (A+) | 6-0 | 170 | R-R | 1994-06-13 | 25 | La Romana,Dom Rep | AA | 2012-2019 | - | Free Agent | - (MLB) | ||
| Carlos Acevedo | P | Potomac (A+) | 6-3 | 200 | R-R | 1994-09-27 | 24 | La Vega,Dom Rep | A+ | 2014-2019 | - | Free Agent | - (MLB) | ||
| Austin Adams | P | Fresno (AAA) Washington (MLB) | 6-2 | 180 | R-R | 1991-05-05 | 28 | Tampa,Florida | MLB | 2010-2019 | 2017-2019 | 2012- 8- 267-ANA | South Florida | Active | Seattle Mariners (MLB) |
| Matt Adams | 1B | Washington (MLB) | 6-3 | 230 | R-R | 1988-08-31 | 30 | Phillipsburg,Pennsylvania | MLB | 2007-2019 | 2012-2019 | 2009-23- 699-SLN | Slippery Rock Pennsylvania | Free Agent | (MLB) |
| Joan Adon | P | Hagerstown (A) | 6-2 | 185 | R-R | 1998-08-12 | 20 | Santo Domingo,Dom Rep | A | 2017-2019 | - | Minors | Washington Nationals (A) | ||
| Telmito Agustin | OF | Potomac (A+) | 5-10 | 160 | L-L | 1996-10-09 | 22 | Charlotte Amalie,Virgin Islands | A+ | 2014-2019 | - | Minors | Washington Nationals (A+) | ||
| Tomas Alastre | P | Hagerstown (A) | 6-4 | 170 | R-R | 1998-06-11 | 21 | Valencia,Venezuela | A | 2015-2019 | - | 2014- UDFA-WAS | Minors | Washington Nationals (A+) | |
| Jake Alu | 3B | Auburn (A-) | 5-10 | 165 | L-R | 1997-04-06 | 22 | Hamilton,New Jersey | A- | 2016-2019 | - | 2019-24- 723-WAS | Boston Col | Minors | Washington Nationals (A-) |
| Elvis Alvarado | OF | GCL Nationals (Rk) | 6-4 | 175 | R-R | 1999-02-23 | 20 | Sabaneta,Dom Rep | A | 2017-2019 | - | 2015- UDFA-WAS | Minors | Seattle Mariners (A) | |
| Henderson Alvarez | P | Fresno (AAA) | 6-1 | 175 | R-R | 1990-04-18 | 29 | Valencia,Venezuela | MLB | 2008-2019 | 2011-2017 | 2007- UDFA-TOR | Minors | Washington Nationals (AAA) | |
| Thony Amoroso | P | GCL Nationals (Rk) | 6-0 | 154 | R-R | 1998-08-02 | 20 | Caracas,Venezuela | Rk | 2017-2019 | - | Minors | Washington Nationals (Rk) | ||
| Yasel Antuna | SS | GCL Nationals (Rk) | 6-0 | 170 | B-R | 1999-10-26 | 19 | Peravia,Dom Rep | A | 2017-2019 | - | 2016- UDFA-WAS | Minors | Washington Nationals (Rk) | |
| Andry Arias | 1B | GCL Nationals (Rk) | 6-3 | 180 | L-L | 2000-06-19 | 19 | San Cristobal,Dom Rep | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| J.T. Arruda | SS | Auburn (A-) | 5-11 | 185 | L-R | 1997-10-20 | 21 | Clovis,California | A- | 2018-2019 | - | 2019-11- 333-WAS | Fresno St | Minors | Washington Nationals (A-) |
| Dakota Bacus | P | Harrisburg (AA) Fresno (AAA) | 6-2 | 190 | R-R | 1991-04-02 | 28 | Moline,Illinois | AAA | 2010-2019 | - | 2012- 9- 289-OAK | Indiana St, Southeastern CC | Minors | Washington Nationals (AAA) |
| Joan Baez | P | Harrisburg (AA) Fresno (AAA) | 6-3 | 190 | R-R | 1994-12-26 | 24 | San Cristobal,Dom Rep | AAA | 2014-2019 | - | 2014- UDFA-WAS | Minors | Washington Nationals (AAA) | |
| Nick Banks | OF | Potomac (A+) Harrisburg (AA) | 6-0 | 190 | L-L | 1994-11-18 | 24 | Charlotte,North Carolina | AA | 2014-2019 | - | 2016- 4- 124-WAS | Texas A&M U. | Minors | Washington Nationals (AA) |
| Jake Barnett | P | GCL Nationals (Rk) | 6-2 | 190 | L-L | 1994-07-30 | 24 | San Diego,California | A | 2014-2019 | - | 2016-20- 604-WAS | Lewis-Clark St, Palomar Col | Minors | Washington Nationals (Rk) |
| Kyle Barraclough | P | GCL Nationals (Rk) Potomac (A+) Harrisburg (AA) Washington (MLB) | 6-3 | 180 | R-R | 1990-05-23 | 29 | Santa Clara,California | MLB | 2009-2019 | 2015-2019 | 2012- 7- 240-SLN | St. Mary's Col California | Minors | San Francisco Giants (AAA) |
| Tres Barrera | C | Harrisburg (AA) Washington (MLB) | 6-0 | 211 | R-R | 1994-09-15 | 24 | Eagle Pass,Texas | MLB | 2014-2019 | 2019-2019 | 2016- 6- 184-WAS | Texas | Active | Washington Nationals (MLB) |
| Aaron Barrett | P | Harrisburg (AA) Washington (MLB) | 6-4 | 200 | R-R | 1988-01-02 | 31 | Evansville,Indiana | MLB | 2007-2019 | 2014-2019 | 2010- 9- 266-WAS | Mississippi, Wabash Valley Col | Active | Washington Nationals (MLB) |
| Frankie Bartow | P | Potomac (A+) | 6-3 | 180 | R-R | 1997-02-26 | 22 | Miami,Florida | A+ | 2016-2019 | - | 2018-11- 341-WAS | Miami | Minors | Washington Nationals (AA) |
| Rafael Bautista | OF | Auburn (A-) Hagerstown (A) Harrisburg (AA) | 6-2 | 165 | R-R | 1993-03-08 | 26 | Santo Domingo,Dom Rep | MLB | 2012-2019 | 2017-2018 | 2012- UDFA-WAS | Minors | Washington Nationals (AA) | |
| Dylan Beasley | P | GCL Nationals (Rk) Auburn (A-) | 6-2 | 185 | R-R | 1997-12-02 | 21 | Rome,Georgia | A- | 2017-2019 | - | 2019-32- 963-WAS | Berry Col | Minors | Washington Nationals (Rk) |
| Allan Berrios | C | GCL Nationals (Rk) | 5-10 | 168 | R-R | 1997-08-09 | 21 | Mayaguez,Puerto Rico | RK | 2019-2019 | - | 2019-22- 663-WAS | Western Oklahoma St | Minors | Washington Nationals (Rk) |
| Dante Bichette | 3B | Harrisburg (AA) | 6-1 | 215 | R-R | 1992-09-26 | 26 | Orlando,Florida | AA | 2011-2019 | - | 2011- 1- 51-NYA | Free Agent | - (MLB) | |
| Jamori Blash | 1B | Hagerstown (A) | 6-4 | 225 | R-R | 1995-11-09 | 23 | St. Thomas,Virgin Islands | A | 2017-2019 | - | 2017-23- 703-WAS | Cochise Col | Minors | Washington Nationals (A) |
| Mike Blazek | P | Fresno (AAA) Washington (MLB) | 6-0 | 180 | R-R | 1989-03-16 | 30 | Las Vegas,Nevada | MLB | 2007-2019 | 2013-2019 | 2007-35-1068-SLN | Free Agent | - (MLB) | |
| Jordan Bocko | P-OF | Auburn (A-) | 5-11 | 190 | R-R | 1997-01-10 | 22 | Laguna Niguel,California | A- | 2016-2019 | - | 2019-28- 843-WAS | California-Irvine | Minors | Washington Nationals (A-) |
| AJ Bogucki | P | Potomac (A+) | 6-3 | 187 | R-R | 1995-05-02 | 24 | Gilbertsville,Pennsylvania | A+ | 2014-2019 | - | 2016- 8- 244-WAS | North Carolina | Free Agent | - (MLB) |
| Bryan Bonnell | P | Potomac (A+) Harrisburg (AA) Fresno (AAA) | 6-5 | 190 | L-R | 1993-09-28 | 25 | Las Vegas,Nevada | AAA | 2013-2019 | - | 2015-36-1078-TBA | UNLV | Free Agent | - (MLB) |
| Grant Borne | P | Potomac (A+) | 6-4 | 195 | L-L | 1994-04-06 | 25 | Baton Rouge,Louisiana | A+ | 2013-2019 | - | 2015- 7- 224-WAS | Nicholls St | Free Agent | - (MLB) |
| James Bourque | P | Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-4 | 165 | R-R | 1993-07-09 | 25 | Ann Arbor,Michigan | MLB | 2012-2019 | 2019-2019 | 2014-14- 424-WAS | Michigan | Minors | Washington Nationals (AAA) |
| Brad Boxberger | P | Harrisburg (AA) | 6-2 | 185 | R-R | 1988-05-27 | 31 | Tustin,California | MLB | 2007-2019 | 2012-2019 | 2009- 1- 43-CIN | USC | Free Agent | - (MLB) |
| Jared Brasher | P | Hagerstown (A) | 6-3 | 200 | R-R | 1995-01-03 | 24 | Pell City,Alabama | A | 2014-2019 | - | 2017- 8- 253-WAS | Samford U. | Free Agent | - (MLB) |
| Ben Braymer | P | Harrisburg (AA) Fresno (AAA) | 6-2 | 215 | L-L | 1994-04-28 | 25 | Baton Rouge,Louisiana | AAA | 2014-2019 | - | 2016-18- 544-WAS | Auburn U., Louisiana St-Eunice | Active | Washington Nationals (MLB) |
| Jake Buchanan | P | Fresno (AAA) | 6-1 | 221 | R-R | 1989-09-24 | 29 | Gastonia,North Carolina | MLB | 2008-2019 | 2014-2017 | 2010- 8- 243-HOU | North Carolina St | Minors | Washington Nationals (AAA) |
| Asdrubal Cabrera | SS | Washington (MLB) | 6-0 | 185 | B-R | 1985-11-13 | 33 | Puerto La Cruz,Venezuela | MLB | 2004-2019 | 2007-2019 | 2002- UDFA-SEA | Free Agent | (MLB) | |
| Gage Canning | CF | Hagerstown (A) Potomac (A+) | 5-10 | 175 | L-R | 1997-04-23 | 22 | Ramona,California | A+ | 2016-2019 | - | 2018- 5- 161-WAS | Arizona St | Minors | Washington Nationals (A+) |
| Adalberto Carrillo | IF | Auburn (A-) | 5-11 | 185 | R-R | 1995-06-01 | 24 | Santa Ana,California | A- | 2015-2019 | - | 2017-33-1003-WAS | USC | Minors | Washington Nationals (A-) |
| Tim Cate | P | Hagerstown (A) Potomac (A+) | 6-0 | 185 | L-L | 1997-09-30 | 21 | Manchester,Connecticut | A+ | 2016-2019 | - | 2018- 2- 65-WAS | Connecticut | Minors | Washington Nationals (A+) |
| Phil Caulfield | IF | Auburn (A-) Hagerstown (A) | 5-8 | 160 | R-R | 1994-12-30 | 24 | Burlingame,California | A | 2014-2019 | - | 2017-32- 973-WAS | Loyola Marymount U., Skyline Col | Minors | Washington Nationals (A) |
| Gilberto Chu | P | Auburn (A-) | 5-11 | 160 | L-L | 1997-11-19 | 21 | Panama City,Panama | A- | 2015-2019 | - | Minors | Washington Nationals (A-) | ||
| Jackson Cluff | SS | Hagerstown (A) | 5-11 | 175 | L-R | 1996-12-03 | 22 | Meridian,Idaho | A | 2016-2019 | - | 2019- 6- 183-WAS | Brigham Young U. | Minors | Washington Nationals (A) |
| Zach Collier | OF | Auburn (A-) Harrisburg (AA) | 6-2 | 185 | L-L | 1990-09-08 | 28 | Chino Hills,California | AAA | 2008-2019 | - | 2008- 1- 34-PHI | Minors | Washington Nationals (A-) | |
| Jacob Condra-Bogan | P | Harrisburg (AA) | 6-3 | 206 | R-R | 1994-08-30 | 24 | Woodruff,South Carolina | AA | 2014-2019 | - | 2017-32- 969-TOR | Wofford Col, Georgia So.U. | Minors | Washington Nationals (AA) |
| Justin Connell | OF | Hagerstown (A) | 6-1 | 185 | R-R | 1999-03-11 | 20 | Plantation,Florida | A | 2017-2019 | - | 2017-11- 343-WAS | Minors | Washington Nationals (A) | |
| Scott Copeland | P | Fresno (AAA) | 6-4 | 210 | R-R | 1987-12-15 | 31 | White Oak,Texas | MLB | 2007-2019 | 2015-2018 | 2010-21- 628-BAL | So.Mississippi, Panola Col | Minors | Washington Nationals (AAA) |
| Patrick Corbin | P | Washington (MLB) | 6-3 | 165 | L-L | 1989-07-19 | 29 | Clay,New York | MLB | 2009-2019 | 2012-2019 | 2009- 2- 80-ANA | Chipola Col | Active | Washington Nationals (MLB) |
| Jimmy Cordero | P | Fresno (AAA) | 6-3 | 195 | R-R | 1991-10-19 | 27 | San Cristobal,Dom Rep | MLB | 2012-2019 | 2018-2019 | Active | Chicago White Sox (MLB) | ||
| Aldrem Corredor | OF | Potomac (A+) | 6-0 | 202 | L-L | 1995-10-27 | 23 | Miranda,Venezuela | A+ | 2013-2019 | - | 2012- UDFA-WAS | Minors | Washington Nationals (AA) | |
| Collin Cowgill | LF-CF | Fresno (AAA) | 5-9 | 195 | R-L | 1986-05-22 | 33 | Lexington,Kentucky | MLB | 2005-2019 | 2011-2016 | 2008- 5- 168-ARI | Kentucky | Minors | Washington Nationals (AAA) |
| Matt Cronin | P | Hagerstown (A) | 6-2 | 190 | L-L | 1997-09-20 | 21 | Navarre,Florida | A | 2017-2019 | - | 2019- 4- 123-WAS | Arkansas | Minors | Washington Nationals (A) |
| Tyler Cropley | C-OF | Hagerstown (A) | 5-11 | 185 | R-R | 1995-12-10 | 23 | McCook Lake,South Dakota | A | 2015-2019 | - | 2018- 8- 251-WAS | Iowa, Iowa Western CC | Minors | Washington Nationals (A) |
| Wil Crowe | P | Harrisburg (AA) Fresno (AAA) | 6-3 | 230 | R-R | 1994-09-09 | 24 | Sevierville,Tennessee | AAA | 2014-2019 | - | 2017- 2- 65-WAS | South Carolina | Minors | Washington Nationals (AAA) |
| Michael Cuevas | P | GCL Nationals (Rk) | 6-2 | 215 | R-R | 2001-06-29 | 18 | San Antonio,Texas | RK | 2019-2019 | - | 2019-23- 693-WAS | Minors | Washington Nationals (Rk) | |
| Cole Daily | SS | Hagerstown (A) | 5-11 | 170 | L-R | 1996-11-28 | 22 | Springfield,Illinois | A | 2016-2019 | - | 2018-22- 671-WAS | Notre Dame | Minors | Washington Nationals (A) |
| Austin Davidson | IF | Potomac (A+) Harrisburg (AA) | 6-0 | 175 | L-R | 1993-01-03 | 26 | Oxnard,California | AA | 2012-2019 | - | 2014-13- 394-WAS | Pepperdine U. | Minors | Washington Nationals (A+) |
| Chandler Day | P | Hagerstown (A) | 6-5 | 170 | R-R | 1997-05-24 | 22 | Westerville,Ohio | A | 2016-2019 | - | 2018- 7- 221-WAS | Vanderbilt U. | Minors | Washington Nationals (A) |
| Jeremy De La Rosa | OF | GCL Nationals (Rk) | 5-11 | 160 | L-L | 2002-01-16 | 17 | Santo Domingo,Dom Rep | Rk | 2019-2019 | - | Minors | Washington Nationals (Rk) | ||
| Jose De Los Santos | P | GCL Nationals (Rk) | 6-3 | 190 | R-R | 1997-01-14 | 22 | Monte Plata,Dom Rep | A- | 2016-2019 | - | Minors | Washington Nationals (Rk) | ||
| Mason Denaburg | P | GCL Nationals (Rk) | 6-4 | 205 | R-R | 1999-08-08 | 19 | Cape Canaveral,Florida | Rk | 2019-2019 | - | 2018- 1- 27-WAS | (MLB) | ||
| Geraldi Diaz | C | GCL Nationals (Rk) | 6-0 | 196 | L-R | 2000-07-08 | 18 | Puerto Plata,Dom Rep | Rk | 2017-2019 | - | Minors | Washington Nationals (Rk) | ||
| O'Koyea Dickson | 1B | Harrisburg (AA) | 5-11 | 212 | R-R | 1990-02-09 | 29 | San Francisco,California | MLB | 2009-2019 | 2017-2017 | 2011-12- 374-LAN | Sonoma St, Col. San Mateo | Free Agent | - (MLB) |
| Wilmer Difo | SS-2B | GCL Nationals (Rk) Fresno (AAA) Washington (MLB) | 6-0 | 175 | R-R | 1992-04-02 | 27 | Santiago de los Caballeros,Dom Rep | MLB | 2010-2019 | 2015-2019 | 2011- UDFA-WAS | Active | Washington Nationals (MLB) | |
| Chris Dominguez | 3B | Harrisburg (AA) Fresno (AAA) | 6-5 | 235 | R-R | 1986-11-22 | 32 | Los Angeles,California | MLB | 2006-2019 | 2014-2015 | 2009- 3- 86-SFN | Louisville | Free Agent | - (MLB) |
| Mason Doolittle | C | GCL Nationals (Rk) | 6-4 | 220 | R-R | 1998-07-10 | 20 | Jupiter,Florida | Rk | 2018-2019 | - | 2019-18- 543-WAS | Palm Beach St | Minors | Washington Nationals (Rk) |
| Sean Doolittle | P | Potomac (A+) Washington (MLB) | 6-3 | 190 | L-L | 1986-09-26 | 32 | Rapid City,South Dakota | MLB | 2005-2019 | 2012-2019 | 2007- 1- 41-OAK | Virginia | Active | Washington Nationals (MLB) |
| Brian Dozier | 2B | Washington (MLB) | 5-11 | 185 | R-R | 1987-05-15 | 32 | Fulton,Mississippi | MLB | 2006-2019 | 2012-2019 | 2009- 8- 252-MIN | So.Mississippi | Free Agent | (MLB) |
| Brady Dragmire | P | Auburn (A-) Harrisburg (AA) Fresno (AAA) | 6-0 | 185 | R-R | 1993-02-05 | 26 | Sacramento,California | AAA | 2011-2019 | - | 2011-17- 529-TOR | Free Agent | - (MLB) | |
| Alex Dunlap | OF | Potomac (A+) | 6-2 | 195 | R-R | 1994-10-06 | 24 | The Woodlands,Texas | AAA | 2014-2019 | - | 2017-29- 883-WAS | Stanford U. | Minors | Washington Nationals (A) |
| Jack Dunn | SS | Auburn (A-) | 6-2 | 185 | R-R | 1996-09-05 | 22 | Alpharetta,Georgia | A- | 2016-2019 | - | 2019-20- 603-WAS | Northwestern U. | Minors | Washington Nationals (A-) |
| Tyler Dyson | P | GCL Nationals (Rk) Auburn (A-) | 6-2 | 230 | R-R | 1997-12-24 | 21 | Bradenton,Florida | A- | 2017-2019 | - | 2019- 5- 153-WAS | Florida | Minors | Washington Nationals (A-) |
| Adam Eaton | CF-LF | Washington (MLB) | 5-9 | 163 | L-L | 1988-12-06 | 30 | Springfield,Ohio | MLB | 2008-2019 | 2012-2019 | 2010-19- 571-ARI | Miami U. | Active | Washington Nationals (MLB) |
| Roenis Elias | P | Washington (MLB) | 6-2 | 178 | L-L | 1988-08-01 | 30 | Guantanamo,Cuba | MLB | 2011-2019 | 2014-2019 | 2011- UDFA-SEA | Active | Washington Nationals (MLB) | |
| Leandro Emiliani | OF | GCL Nationals (Rk) | 6-1 | 180 | L-L | 2000-03-22 | 19 | San Antero,Colombia | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Paolo Espino | P | GCL Nationals (Rk) Fresno (AAA) | 5-10 | 190 | R-R | 1987-01-10 | 32 | Panama City,Panama | MLB | 2007-2019 | 2017-2017 | 2006-10- 311-CLE | Minors | Washington Nationals (AAA) | |
| Erick Fedde | P | Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-3 | 165 | R-R | 1993-02-25 | 26 | Las Vegas,Nevada | MLB | 2012-2019 | 2017-2019 | 2014- 1- 18-WAS | UNLV | Active | Washington Nationals (MLB) |
| Braian Fernandez | OF | GCL Nationals (Rk) | 6-1 | 170 | R-L | 1999-04-15 | 20 | Caracas,Venezuela | Rk | 2018-2018 | - | (MLB) | |||
| Jose A Ferrer | P | GCL Nationals (Rk) | 5-11 | 180 | L-L | 2000-03-03 | 19 | Maimon,Dom Rep | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Aaron Fletcher | P | Hagerstown (A) Potomac (A+) Harrisburg (AA) | 5-11 | 240 | L-L | 1996-02-26 | 23 | Cypress,Texas | AA | 2015-2019 | - | 2018-14- 431-WAS | Houston | Minors | Seattle Mariners (AA) |
| Anderson Franco | 3B | Potomac (A+) | 6-3 | 190 | R-R | 1997-08-15 | 21 | Bani,Dom Rep | A+ | 2014-2019 | - | 2013- UDFA-WAS | Minors | Washington Nationals (A+) | |
| Cole Freeman | IF | Potomac (A+) | 5-9 | 185 | R-R | 1994-09-27 | 24 | Mandeville,Louisiana | A+ | 2014-2019 | - | 2017- 4- 133-WAS | Louisiana St | Minors | Washington Nationals (AA) |
| Sam Freeman | P | Fresno (AAA) | 5-11 | 170 | R-L | 1987-06-24 | 32 | Houston,Texas | MLB | 2008-2019 | 2012-2019 | 2008-32- 965-SLN | North Central Texas Col, Kansas | Minors | Washington Nationals (AAA) |
| Steven Fuentes | P | Potomac (A+) Harrisburg (AA) | 6-2 | 175 | R-R | 1997-05-04 | 22 | Puerto Armuelles,Panama | AA | 2014-2019 | - | Restricted | Washington Nationals (AA) | ||
| Nelson Galindez | P | Auburn (A-) | 6-3 | 220 | L-L | 1998-07-26 | 20 | Orlando,Florida | A- | 2017-2019 | - | 2017-22- 673-WAS | Free Agent | - (MLB) | |
| Luis Garcia | SS | Harrisburg (AA) | 6-0 | 190 | L-R | 2000-05-16 | 19 | New York,New York | AA | 2017-2019 | - | 2016- UDFA-WAS | Minors | Washington Nationals (AA) | |
| Jhonatan German | P | Hagerstown (A) Potomac (A+) Harrisburg (AA) | 6-4 | 215 | R-R | 1995-01-24 | 24 | Bani,Dom Rep | AA | 2015-2019 | - | Minors | Washington Nationals (AA) | ||
| Tyler Goeddel | 3B | Harrisburg (AA) | 6-4 | 180 | R-R | 1992-10-20 | 26 | Hillsborough,California | MLB | 2012-2019 | 2016-2016 | 2011- 1- 41-TBA | Free Agent | - (MLB) | |
| Yan Gomes | C | Washington (MLB) | 6-1 | 220 | R-R | 1987-07-19 | 31 | Sao Paulo,Brazil | MLB | 2007-2019 | 2012-2019 | 2009-10- 310-TOR | Tennessee, Barry U. | Free Agent | (MLB) |
| Anthony Gomez | 2B | GCL Nationals (Rk) | 6-0 | 181 | R-R | 1996-10-02 | 22 | Pembroke Pines,Florida | Rk | 2016-2019 | - | 2019-34-1023-WAS | UT Rio Grande Valley | Minors | Washington Nationals (Rk) |
| Niomar Gomez | P | Auburn (A-) Hagerstown (A) | 6-3 | 173 | R-R | 1998-09-09 | 20 | Guiria,Venezuela | A | 2017-2019 | - | Minors | Washington Nationals (A) | ||
| Rafael Gomez | P | Auburn (A-) | 6-0 | 178 | R-R | 1998-06-15 | 21 | Azua,Dom Rep | A- | 2016-2019 | - | Minors | Washington Nationals (A-) | ||
| Bengie Gonzalez | 3B-OF | Fresno (AAA) | 5-11 | 160 | R-R | 1990-01-16 | 29 | Caguas,Puerto Rico | AAA | 2008-2019 | - | 2008- 7- 204-PIT | Minors | Washington Nationals (AAA) | |
| Pedro Gonzalez | P | GCL Nationals (Rk) Auburn (A-) | 6-2 | 183 | R-R | 2000-07-16 | 18 | Chitre,Panama | A- | 2017-2019 | - | Minors | Washington Nationals (A-) | ||
| Matt Grace | P | Washington (MLB) | 6-4 | 205 | L-L | 1988-12-14 | 30 | Torrance,California | MLB | 2008-2019 | 2015-2019 | 2010- 8- 236-WAS | UCLA | Free Agent | - (MLB) |
| Javy Guerra | P | Washington (MLB) | 6-1 | 185 | R-R | 1985-10-31 | 33 | Denton,Texas | MLB | 2004-2019 | 2011-2019 | 2004- 4- 118-LAN | Free Agent | (MLB) | |
| Taylor Guilbeau | P | Harrisburg (AA) Fresno (AAA) | 6-3 | 170 | L-L | 1993-05-12 | 26 | Baton Rouge,Louisiana | MLB | 2012-2019 | 2019-2019 | 2015-10- 314-WAS | Alabama | Active | Seattle Mariners (MLB) |
| Angel Guillen | P | Hagerstown (A) Potomac (A+) | 6-2 | 150 | R-R | 1997-01-24 | 22 | Maracay,Venezuela | A+ | 2014-2019 | - | Minors | Washington Nationals (A+) | ||
| Taylor Gushue | C | Fresno (AAA) | 6-2 | 205 | B-R | 1993-12-19 | 25 | Boca Raton,Florida | AAA | 2012-2019 | - | 2014- 4- 131-PIT | Florida | Minors | Washington Nationals (AAA) |
| K.J. Harrison | C | Hagerstown (A) Potomac (A+) | 6-0 | 208 | R-R | 1996-08-11 | 22 | Kailua,Hawaii | A+ | 2015-2019 | - | 2017- 3- 84-MIL | Oregon St | Minors | Washington Nationals (A+) |
| Jeremy Hellickson | P | GCL Nationals (Rk) Washington (MLB) | 6-1 | 185 | R-R | 1987-04-08 | 32 | Des Moines,Iowa | MLB | 2005-2019 | 2010-2019 | 2005- 4- 118-TBA | Free Agent | (MLB) | |
| Alfonso Hernandez | P | Auburn (A-) Hagerstown (A) | 5-11 | 144 | L-L | 1999-08-03 | 19 | Barcelona,Venezuela | A | 2016-2019 | - | Minors | Washington Nationals (A) | ||
| Yadiel Hernandez | OF | Fresno (AAA) | 5-9 | 185 | L-R | 1987-10-09 | 31 | Matanzas,Cuba | AAA | 2017-2019 | - | Minors | Washington Nationals (AAA) | ||
| Abrahan Hiraldo | P | GCL Nationals (Rk) | 6-0 | 171 | R-R | 1998-10-07 | 20 | Santo Domingo,Dom Rep | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Greg Holland | P | Harrisburg (AA) | 5-11 | 180 | R-R | 1985-11-20 | 33 | Morganton,North Carolina | MLB | 2005-2019 | 2010-2019 | 2007-10- 306-KCA | Western Carolina U. | Free Agent | - (MLB) |
| J.J. Hoover | P | Fresno (AAA) | 6-3 | 215 | R-R | 1987-08-13 | 31 | Elizabeth,Pennsylvania | MLB | 2008-2019 | 2012-2018 | 2008-10- 310-ATL | Calhoun CC | Minors | Washington Nationals (AAA) |
| Hayden Howard | P | Potomac (A+) | 6-4 | 185 | R-L | 1994-03-26 | 25 | Carrollton,Texas | A+ | 2013-2019 | - | 2016-12- 364-WAS | Seward County CC, Texas A&M U., Texas Tech U. | Minors | Washington Nationals (A) |
| Jacob Howell | P | Hagerstown (A) Potomac (A+) | 6-3 | 190 | R-R | 1995-08-09 | 23 | Orange,Texas | A+ | 2014-2019 | - | 2016-21- 634-WAS | Delta St, Angelina Col | Minors | Washington Nationals (A+) |
| Jaylen Hubbard | 3B | GCL Nationals (Rk) | 5-11 | 180 | R-R | 1996-07-24 | 22 | Missouri City,Texas | Rk | 2015-2019 | - | 2019-27- 813-WAS | Texas St | Minors | Washington Nationals (Rk) |
| Daniel Hudson | P | Washington (MLB) | 6-4 | 215 | R-R | 1987-03-09 | 32 | Virginia Beach,Virginia | MLB | 2006-2019 | 2009-2019 | 2008- 5- 150-CHA | Old Dominion U. | Free Agent | (MLB) |
| Jorge Hurtado | OF | GCL Nationals (Rk) | 6-1 | 165 | R-R | 2000-10-15 | 18 | - | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Jake Irvin | P | Hagerstown (A) | 6-4 | 190 | R-R | 1997-02-18 | 22 | Bloomington,Minnesota | A | 2016-2019 | - | 2018- 4- 131-WAS | Oklahoma | Minors | Washington Nationals (A) |
| Andrew Istler | P-OF | Potomac (A+) Harrisburg (AA) | 5-11 | 170 | R-R | 1992-09-18 | 26 | Wellington,Florida | AAA | 2012-2019 | - | 2015-23- 702-LAN | Duke U. | Minors | Washington Nationals (AA) |
| Charls Jameson | P | GCL Nationals (Rk) | 6-1 | 175 | R-R | 2001-01-27 | 18 | - | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Dan Jennings | P | Harrisburg (AA) Washington (MLB) | 6-3 | 190 | L-L | 1987-04-17 | 32 | Berkeley,California | MLB | 2006-2019 | 2012-2019 | 2008- 9- 268-FLO | Nebraska | Minors | New York Yankees (AAA) |
| Kyle Johnston | P | Potomac (A+) | 6-0 | 202 | R-R | 1996-07-17 | 22 | Flower Mound,Texas | A+ | 2015-2019 | - | 2017- 6- 193-WAS | Texas | Minors | Toronto Blue Jays (A+) |
| Hunter Jones | OF | Harrisburg (AA) Fresno (AAA) | 6-2 | 185 | R-R | 1991-08-17 | 27 | Long Beach,California | AAA | 2014-2019 | - | 2010-11- 330-CLE | Free Agent | - (MLB) | |
| Alec Keller | OF | Fresno (AAA) | 6-1 | 185 | L-R | 1992-05-13 | 27 | Richmond,Virginia | AAA | 2011-2019 | - | 2014-17- 514-WAS | Princeton U. | Minors | Washington Nationals (AAA) |
| Howie Kendrick | 2B | Washington (MLB) | 5-10 | 170 | R-R | 1983-07-12 | 35 | Jacksonville,Florida | MLB | 2002-2019 | 2006-2019 | 2002-10- 294-ANA | St. Johns River St | Active | Washington Nationals (MLB) |
| Carter Kieboom | SS | Fresno (AAA) Washington (MLB) | 6-2 | 190 | R-R | 1997-09-03 | 21 | Marietta,Georgia | MLB | 2016-2019 | 2019-2019 | 2016- 1- 28-WAS | Minors | Washington Nationals (AAA) | |
| Spencer Kieboom | C | Harrisburg (AA) | 6-0 | 220 | R-R | 1991-03-16 | 28 | Mount Pleasant,South Carolina | MLB | 2010-2019 | 2016-2018 | 2012- 5- 174-WAS | Clemson U. | Free Agent | - (MLB) |
| Gabe Klobosits | P | GCL Nationals (Rk) Hagerstown (A) Potomac (A+) | 6-7 | 270 | L-R | 1995-05-16 | 24 | Katy,Texas | A+ | 2014-2019 | - | 2017-36-1093-WAS | Galveston Col, Auburn U. | Minors | Washington Nationals (A+) |
| Lucas Knowles | P | GCL Nationals (Rk) Auburn (A-) | 6-1 | 168 | L-L | 1998-03-14 | 21 | Port Orchard,Washington | A- | 2018-2019 | - | 2019-14- 423-WAS | Washington, Central Arizona Col | Minors | Washington Nationals (A-) |
| George Kontos | P | Fresno (AAA) | 6-3 | 215 | R-R | 1985-06-12 | 34 | Lincolnwood,Illinois | MLB | 2004-2019 | 2011-2018 | 2006- 5- 164-NYA | Northwestern U. | Free Agent | - (MLB) |
| Gilbert Lara | SS | Hagerstown (A) Potomac (A+) | 6-3 | 180 | R-R | 1997-10-30 | 21 | San Cristobal,Dom Rep | A+ | 2015-2019 | - | 2014- UDFA-MIL | Minors | Washington Nationals (A+) | |
| Andrew Lee | P-IF | Potomac (A+) Harrisburg (AA) | 6-5 | 210 | L-R | 1993-12-02 | 25 | Morristown,Tennessee | AA | 2013-2019 | - | 2015-11- 344-WAS | Tennessee | Minors | Washington Nationals (AA) |
| Evan Lee | P-OF | Auburn (A-) | 6-2 | 190 | L-L | 1997-06-18 | 22 | Bryant,Arkansas | A- | 2017-2019 | - | 2018-15- 461-WAS | Arkansas | Minors | Washington Nationals (A-) |
| Jake Lowery | C | Harrisburg (AA) | 6-0 | 195 | L-R | 1990-07-21 | 28 | Midlothian,Virginia | AAA | 2009-2019 | - | 2011- 4- 128-CLE | James Madison U. | Free Agent | - (MLB) |
| Josh Lucas | P | Fresno (AAA) | 6-6 | 185 | R-R | 1990-11-05 | 28 | Lakeland,Florida | MLB | 2010-2019 | 2017-2019 | 2010-21- 649-SLN | State Col Florida Manatee-Sarasota | Minors | Washington Nationals (AAA) |
| Tyler Mapes | P | Harrisburg (AA) | 6-0 | 190 | R-R | 1991-07-18 | 27 | Dallas,Texas | AA | 2010-2019 | - | 2014-30- 904-WAS | Navy, Navarro Col, Tulane U. | Minors | Washington Nationals (AA) |
| Kyle Marinconz | IF | Hagerstown (A) Potomac (A+) | 5-10 | 185 | L-R | 1996-05-24 | 23 | San Jose,California | A+ | 2016-2019 | - | 2018-24- 731-WAS | Cal Poly | Minors | Washington Nationals (A) |
| Jose Marmolejos | 1B | Harrisburg (AA) Fresno (AAA) | 6-1 | 185 | L-L | 1993-01-02 | 26 | Perth Amboy,New Jersey | AAA | 2011-2019 | - | Minors | Seattle Mariners (MLB) | ||
| Junior Martina | SS | GCL Nationals (Rk) Auburn (A-) | 5-11 | 190 | R-R | 1997-12-12 | 21 | Willemstad,Curacao | A- | 2019-2019 | - | 2019-16- 483-WAS | Western Oklahoma St | Minors | Washington Nationals (A-) |
| Adrian Martinez | P | GCL Nationals (Rk) Auburn (A-) | 6-0 | 185 | R-R | 1998-08-02 | 20 | Guayubin,Dom Rep | A- | 2016-2019 | - | Minors | Washington Nationals (Rk) | ||
| David Masters | SS | Auburn (A-) Potomac (A+) Harrisburg (AA) | 6-1 | 185 | R-R | 1993-04-23 | 26 | Lake St. Louis,Missouri | AA | 2012-2019 | - | 2013-14- 436-WAS | Arkansas, Central Arizona Col | Free Agent | - (MLB) |
| Wilfrido Matos | SS | GCL Nationals (Rk) | 5-11 | 160 | R-R | 2000-09-28 | 18 | Jimani,Dom Rep | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Kevin McGowan | P | GCL Nationals (Rk) Harrisburg (AA) Fresno (AAA) | 6-6 | 215 | R-R | 1991-10-18 | 27 | Nashua,New Hampshire | MLB | 2011-2019 | 2017-2017 | 2013-13- 386-NYN | Franklin Pierce U. | Free Agent | - (MLB) |
| Kyle Mcgowin | P | Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-3 | 180 | R-R | 1991-11-27 | 27 | Sag Harbor,New York | MLB | 2011-2019 | 2018-2019 | 2013- 5- 157-ANA | Savannah St | Minors | Washington Nationals (AA) |
| Jeremy McKinney | P | Potomac (A+) | 6-0 | 180 | R-R | 1994-12-08 | 24 | Franklin,Indiana | A+ | 2014-2019 | - | 2017-31- 943-WAS | Indiana St, NWFlorida St | Minors | Washington Nationals (A+) |
| Pearson McMahan | P | Auburn (A-) Hagerstown (A) | 6-3 | 180 | L-R | 1996-07-01 | 22 | Orange Park,Florida | A | 2016-2019 | - | 2017- 4- 116-COL | North Florida, St. Johns River St | Minors | Washington Nationals (A) |
| Hunter McMahon | P | GCL Nationals (Rk) Auburn (A-) | 6-3 | 185 | R-R | 1998-04-09 | 21 | Kansas City,Missouri | A- | 2018-2019 | - | 2019- 9- 273-WAS | Texas St, Coffeyville CC | Minors | Washington Nationals (Rk) |
| Bryan Mejia | 2B | Potomac (A+) Harrisburg (AA) | 6-1 | 170 | B-R | 1994-03-02 | 25 | Bani,Dom Rep | AA | 2011-2019 | - | Free Agent | - (MLB) | ||
| Ricardo Mendez | OF | Auburn (A-) Hagerstown (A) | 6-0 | 155 | L-L | 2000-01-24 | 19 | Barcelona,Venezuela | A | 2017-2019 | - | 2016- UDFA-WAS | Minors | Washington Nationals (A-) | |
| Drew Mendoza | 3B | Hagerstown (A) | 6-5 | 230 | L-R | 1997-10-10 | 21 | Minneola,Florida | A | 2017-2019 | - | 2019- 3- 94-WAS | Florida St | Minors | Washington Nationals (A) |
| Omar Meregildo | 3B | Hagerstown (A) Potomac (A+) | 6-1 | 185 | R-R | 1997-08-18 | 21 | Santo Domingo,Dom Rep | A+ | 2015-2019 | - | 2014- UDFA-WAS | Minors | Washington Nationals (A+) | |
| Bobby Milacki | P | Auburn (A-) | 6-2 | 210 | R-R | 1996-11-06 | 22 | Lake Havasu City,Arizona | A- | 2016-2019 | - | 2018-38-1151-WAS | Grand Canyon U., Hutchinson CC, Arizona Christian U. | Minors | Washington Nationals (A-) |
| Justin Miller | P | GCL Nationals (Rk) | 6-3 | 190 | R-R | 1987-06-13 | 32 | Bakersfield,California | MLB | 2006-2019 | 2014-2019 | 2008-16- 483-TEX | Bakersfield Col, Fresno St | Minors | Toronto Blue Jays (AAA) |
| Justin Miller | P | Hagerstown (A) | 6-4 | 183 | R-R | 1998-05-17 | 21 | Bakersfield,California | A | 2016-2019 | - | 2016-12- 347-PHI | Minors | Washington Nationals (A) | |
| Justin Miller | P | Potomac (A+) Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-3 | 190 | R-R | 1987-06-13 | 32 | Bakersfield,California | MLB | 2006-2019 | 2014-2019 | 2008-16- 483-TEX | Bakersfield Col, Fresno St | Minors | Toronto Blue Jays (AAA) |
| Jordan Mills | P | Harrisburg (AA) Fresno (AAA) | 6-5 | 208 | L-L | 1992-05-11 | 27 | Shingle Springs,California | AAA | 2011-2019 | - | 2013-28- 827-HOU | St. Mary's Col California | Free Agent | - (MLB) |
| Davis Moore | P | GCL Nationals (Rk) Auburn (A-) | 6-4 | 190 | R-R | 1998-03-04 | 21 | Rancho Cucamonga,California | A- | 2017-2019 | - | 2019-15- 453-WAS | Fresno St | Minors | Washington Nationals (A-) |
| Jesus Morales | IF | Auburn (A-) | 5-10 | 158 | R-R | 1997-12-22 | 21 | Maracay,Venezuela | A- | 2015-2019 | - | Free Agent | - (MLB) | ||
| Ivan Murzi | C | GCL Nationals (Rk) | 6-0 | 165 | R-R | 2001-05-28 | 18 | - | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Jake Noll | OF | Fresno (AAA) Washington (MLB) | 6-1 | 187 | R-R | 1994-03-08 | 25 | Punta Gorda,Florida | MLB | 2014-2019 | 2019-2019 | 2016- 7- 214-WAS | Florida Gulf Coast U. | Minors | Washington Nationals (AAA) |
| Vidal Nuno | P | Fresno (AAA) | 5-11 | 195 | L-L | 1987-07-26 | 31 | National City,California | MLB | 2009-2019 | 2013-2018 | 2009-48-1445-CLE | Baker U. | Minors | Tampa Bay Rays (AAA) |
| Pablo O'Connor | 2B | Hagerstown (A) | 6-0 | 195 | R-R | 1995-09-06 | 23 | - | A | 2018-2019 | - | 2018-27- 821-WAS | Azusa Pacific U. | Retired | - (MLB) |
| Logan Ondrusek | P | Harrisburg (AA) Fresno (AAA) | 6-8 | 195 | R-R | 1985-02-13 | 34 | Hallettsville,Texas | MLB | 2004-2019 | 2010-2016 | 2005-13- 392-CIN | McLennan CC | Minors | Washington Nationals (AAA) |
| Jorge Pantoja | P | Potomac (A+) | 6-6 | 220 | R-R | 1994-03-26 | 25 | Lehigh Acres,Florida | A+ | 2013-2019 | - | 2015-30- 914-WAS | Alabama St | Minors | Washington Nationals (A+) |
| Gerardo Parra | RF | Washington (MLB) | 5-11 | 197 | L-L | 1987-05-06 | 32 | Santa Barbara del Zulia,Venezuela | MLB | 2006-2019 | 2009-2019 | 2004- UDFA-ARI | Free Agent | (MLB) | |
| Juan Pascal | SS | Hagerstown (A) | 6-1 | 175 | R-R | 1997-11-06 | 21 | La Romana,Dom Rep | A | 2016-2018 | - | (MLB) | |||
| Juan Pascual | SS | Hagerstown (A) | 6-1 | 175 | R-R | 1997-11-06 | 21 | La Romana,Dom Rep | A | 2017-2019 | - | Minors | Washington Nationals (A) | ||
| Francys Peguero | SS | Hagerstown (A) Potomac (A+) | 6-2 | 170 | R-R | 1995-10-04 | 23 | Hato Mayor,Dom Rep | A+ | 2013-2019 | - | Minors | Washington Nationals (A+) | ||
| Jairon Peguero | P | Gulf Coast Nationals (Rk) GCL Nationals (Rk) Auburn (A-) | 6-0 | 170 | L-L | 1997-06-14 | 22 | Santo Domingo,Dom Rep | A- | 2016-2019 | - | Minors | Washington Nationals (Rk) | ||
| Bryan Pena | P | GCL Nationals (Rk) | 6-1 | 175 | L-L | 2000-01-10 | 19 | Santo Domingo,Dom Rep | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Landerson Pena | OF | Auburn (A-) | 6-1 | 180 | R-R | 1997-10-14 | 21 | Azua,Dom Rep | A- | 2016-2019 | - | Minors | Washington Nationals (A-) | ||
| Malvin Pena | P | Potomac (A+) | 6-2 | 180 | R-R | 1997-06-24 | 22 | Santo Domingo,Dom Rep | A+ | 2014-2019 | - | Minors | Washington Nationals (A+) | ||
| Ronald Pena | P | Harrisburg (AA) Fresno (AAA) Harrisburg (AA) Fresno (AAA) | 6-4 | 210 | R-R | 1991-09-19 | 27 | West Palm Beach,Florida | AAA | 2011-2019 | - | 2012-16- 504-WAS | Col. Charleston, Palm Beach St | Minors | Washington Nationals (AAA) |
| Viandel Pena | 2B | GCL Nationals (Rk) | 5-8 | 148 | B-R | 2000-11-22 | 18 | Azua,Dom Rep | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Fray Perez | P | Auburn (A-) | 5-11 | 170 | R-R | 1996-08-22 | 22 | Moca,Dom Rep | A- | 2017-2019 | - | Free Agent | - (MLB) | ||
| Wilmer Perez | DH | Auburn (A-) | 5-10 | 186 | R-R | 1998-04-16 | 21 | Valencia,Venezuela | A- | 2017-2019 | - | Minors | Washington Nationals (A-) | ||
| Nic Perkins | C | GCL Nationals (Rk) Hagerstown (A) | 6-4 | 210 | R-R | 1996-02-19 | 23 | St. Charles,Missouri | A | 2015-2019 | - | 2017-28- 853-WAS | Mississippi, Drury U. | Minors | Washington Nationals (A) |
| Anthony Peroni | C | Auburn (A-) | 5-11 | 175 | R-R | 1996-12-12 | 22 | Hamilton,New Jersey | A- | 2016-2019 | - | 2017-14- 433-WAS | Mercer County CC | Minors | Washington Nationals (A-) |
| Todd Peterson | P | GCL Nationals (Rk) Auburn (A-) | 6-5 | 224 | R-R | 1998-01-22 | 21 | St. Petersburg,Florida | A- | 2017-2019 | - | 2019- 7- 213-WAS | Louisiana St | Minors | Washington Nationals (A-) |
| Israel Pineda | C | Hagerstown (A) | 5-11 | 190 | R-R | 2000-04-03 | 19 | Maracay,Venezuela | A | 2017-2019 | - | Minors | Washington Nationals (A) | ||
| Colton Pogue | IF | Auburn (A-) | 6-1 | 195 | R-R | 1996-02-01 | 23 | Blue Springs,Missouri | A- | 2015-2019 | - | 2018-29- 881-WAS | Western Illinois U., Pittsburg St | Free Agent | - (MLB) |
| Miguel Pozo | P | GCL Nationals (Rk) | 6-4 | 185 | R-R | 1999-10-11 | 19 | - | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||
| Andrew Pratt | C | Auburn (A-) | 6-2 | 200 | R-R | 1996-07-24 | 22 | Albuquerque,New Mexico | A- | 2016-2019 | - | 2019-10- 303-WAS | New Mexico, Lubbock Christian U. | Minors | Washington Nationals (A-) |
| Parker Quinn | 1B | GCL Nationals (Rk) | 6-4 | 195 | R-R | 1996-07-19 | 22 | Jupiter,Florida | Rk | 2017-2019 | - | 2019-25- 753-WAS | Hofstra U. | Minors | Washington Nationals (Rk) |
| Tanner Rainey | P | Fresno (AAA) Washington (MLB) | 6-2 | 210 | R-R | 1992-12-25 | 26 | Folsom,Louisiana | MLB | 2012-2019 | 2018-2019 | 2015- 2- 71-CIN | Southeastern Louisiana U., West Alabama | Active | Washington Nationals (MLB) |
| Jake Randa | OF | Auburn (A-) | 6-1 | 195 | L-L | 1998-12-14 | 20 | Overland Park,Kansas | A- | 2019-2019 | - | 2019-13- 393-WAS | NWFlorida St | Minors | Washington Nationals (A-) |
| Nick Raquet | P | Potomac (A+) | 6-0 | 213 | R-L | 1995-12-12 | 23 | Boalsburg,Pennsylvania | A+ | 2015-2019 | - | 2017- 3- 103-WAS | North Carolina, Col. William and Mary | Minors | Washington Nationals (A+) |
| Raudy Read | C | Fresno (AAA) Washington (MLB) | 6-0 | 170 | R-R | 1993-10-29 | 25 | San Jose de Ocoa,Dom Rep | MLB | 2011-2019 | 2017-2019 | 2011- UDFA-MIA | Active | Washington Nationals (MLB) | |
| Jakson Reetz | C | Potomac (A+) | 6-1 | 195 | R-R | 1996-01-03 | 23 | Hickman,Nebraska | A+ | 2014-2019 | - | 2014- 3- 93-WAS | Minors | Washington Nationals (AA) | |
| Matt Reistetter | C | Fresno (AAA) | 5-10 | 186 | L-R | 1992-05-05 | 27 | Hauppauge,New York | AAA | 2011-2019 | - | Hofstra U. | Minors | Washington Nationals (AAA) | |
| Anthony Rendon | 3B | Washington (MLB) | 5-11 | 170 | R-R | 1990-06-06 | 29 | Houston,Texas | MLB | 2009-2019 | 2013-2019 | 2011- 1- 6-WAS | Rice U. | Free Agent | (MLB) |
| Luis Reyes | P | Potomac (A+) | 6-2 | 175 | R-R | 1994-09-26 | 24 | Sabana Grande de Palenque,Dom Rep | AA | 2013-2019 | - | 2012- UDFA-WAS | Minors | Washington Nationals (A+) | |
| Matt Reynolds | SS | Fresno (AAA) | 6-1 | 195 | R-R | 1990-12-03 | 28 | Tulsa,Oklahoma | MLB | 2010-2019 | 2016-2018 | 2012- 2- 71-NYN | Arkansas | Minors | Kansas City Royals (AAA) |
| Jacob Rhinesmith | OF | Hagerstown (A) | 6-1 | 195 | L-L | 1996-05-23 | 23 | Shakopee,Minnesota | A | 2016-2019 | - | 2018-18- 551-WAS | Western Kentucky U., Indian Hills CC-Centerville | Minors | Washington Nationals (A) |
| Orlando Ribalta | P | GCL Nationals (Rk) | 6-7 | 245 | R-R | 1998-03-05 | 21 | Santa Clara,Cuba | RK | 2019-2019 | - | 2019-12- 363-WAS | Miami-Dade Col | Minors | Washington Nationals (Rk) |
| TJ Rivera | 2B | Harrisburg (AA) | 6-0 | 195 | R-R | 1988-10-27 | 30 | Bronx,New York | MLB | 2008-2019 | 2016-2017 | 2011- UDFA-NYN | Troy U., Wallace CC | Free Agent | - (MLB) |
| Victor Robles | OF | Washington (MLB) | 6-0 | 185 | R-R | 1997-05-19 | 22 | Santo Domingo,Dom Rep | MLB | 2014-2019 | 2017-2019 | 2013- UDFA-WAS | Active | Washington Nationals (MLB) | |
| Fernando Rodney | P | Fresno (AAA) Washington (MLB) | 5-11 | 170 | R-R | 1977-03-18 | 42 | Samana,Dom Rep | MLB | 1999-2019 | 2002-2019 | 1997- UDFA-DET | Free Agent | (MLB) | |
| Carlos Romero | P | Auburn (A-) | 6-6 | 179 | R-R | 1999-07-15 | 19 | San Antonio,Venezuela | A- | 2017-2019 | - | Minors | Washington Nationals (A-) | ||
| Jhon Romero | P | Potomac (A+) | 5-10 | 195 | R-R | 1995-01-17 | 24 | Cartagena,Colombia | AA | 2015-2019 | - | Minors | Washington Nationals (A+) | ||
| Trevor Rosenthal | P | Harrisburg (AA) Washington (MLB) | 6-2 | 190 | R-R | 1990-05-29 | 29 | Lee's Summit,Missouri | MLB | 2009-2019 | 2012-2019 | 2009-21- 639-SLN | Cowley Col | Minors | New York Yankees (AAA) |
| Joe Ross | P | Fresno (AAA) Washington (MLB) | 6-3 | 185 | R-R | 1993-05-21 | 26 | Oakland,California | MLB | 2011-2019 | 2015-2019 | 2011- 1- 25-SDN | Active | Washington Nationals (MLB) | |
| Paul Russo | IF | GCL Nationals (Rk) | 5-9 | 175 | L-R | 1995-10-24 | 23 | Tampa,Florida | Ind | 2017-2019 | - | South Alabama | Minors | Washington Nationals (Rk) | |
| Jackson Rutledge | P | GCL Nationals (Rk) Auburn (A-) Hagerstown (A) | 6-4 | 180 | L-L | 1999-04-01 | 20 | Benton,Louisiana | A | 2018-2019 | - | 2019- 1- 17-WAS | Arkansas, NE Texas CC, San Jacinto Col | Minors | Washington Nationals (A) |
| Ian Sagdal | IF | Harrisburg (AA) | 6-1 | 167 | L-R | 1993-01-06 | 26 | East Wenatchee,Washington | AA | 2012-2019 | - | 2015-16- 494-WAS | Washington St | Minors | Washington Nationals (AA) |
| Adrian Sanchez | SS-2B | Harrisburg (AA) Washington (MLB) | 6-0 | 160 | B-R | 1990-08-16 | 28 | Maracaibo,Venezuela | MLB | 2009-2019 | 2017-2019 | 2007- UDFA-WAS | Active | Washington Nationals (MLB) | |
| Anibal Sanchez | P | Washington (MLB) | 6-0 | 180 | R-R | 1984-02-27 | 35 | Maracay,Venezuela | MLB | 2004-2019 | 2006-2019 | 2001- UDFA-BOS | Active | Washington Nationals (MLB) | |
| Jose Sanchez | SS | Auburn (A-) Hagerstown (A) | 5-11 | 155 | R-R | 2000-07-12 | 18 | Villa de Cura,Venezuela | A | 2017-2019 | - | 2016- UDFA-WAS | Minors | Washington Nationals (A-) | |
| Mario Sanchez | P | Harrisburg (AA) Fresno (AAA) | 6-1 | 166 | R-R | 1994-10-31 | 24 | Maracaibo,Venezuela | AAA | 2012-2019 | - | Minors | Washington Nationals (AA) | ||
| Caldioli Sanfler | OF | Auburn (A-) | 6-2 | 185 | L-R | 1997-12-07 | 21 | Barahona,Dom Rep | A- | 2017-2019 | - | Minors | Washington Nationals (A-) | ||
| Luis Sardinas | SS | Harrisburg (AA) Fresno (AAA) | 6-1 | 150 | B-R | 1993-05-16 | 26 | Caracas,Venezuela | MLB | 2010-2019 | 2014-2018 | 2009- UDFA-TEX | Minors | Washington Nationals (AAA) | |
| Reid Schaller | P | Hagerstown (A) | 6-3 | 210 | R-R | 1997-04-02 | 22 | Lebanon,Indiana | A | 2018-2019 | - | 2018- 3- 101-WAS | Vanderbilt U. | Minors | Washington Nationals (A) |
| Max Scherzer | P | Washington (MLB) | 6-3 | 190 | R-R | 1984-07-27 | 34 | St. Louis,Missouri | MLB | 2004-2019 | 2008-2019 | 2006- 1- 11-ARI | Missouri | Active | Washington Nationals (MLB) |
| Fausto Segura | P | Auburn (A-) | 6-3 | 191 | R-R | 1996-10-24 | 22 | Barahona,Dom Rep | A- | 2017-2019 | - | Minors | Washington Nationals (A-) | ||
| Karlo Seijas | P | GCL Nationals (Rk) Auburn (A-) | 6-1 | 185 | R-R | 2000-09-06 | 18 | - | A- | 2018-2019 | - | Minors | Washington Nationals (A-) | ||
| Derek Self | P | Fresno (AAA) | 6-2 | 185 | R-R | 1990-01-14 | 29 | Cave City,Kentucky | AAA | 2009-2019 | - | 2012- 9- 294-WAS | Louisville | Minors | Washington Nationals (AAA) |
| Eric Senior | OF | Auburn (A-) | 6-2 | 170 | R-R | 1997-09-29 | 21 | Toronto,Ontario | A- | 2017-2019 | - | 2017-13- 403-WAS | Midland Col | Minors | Washington Nationals (A-) |
| Wilson Severino | P | GCL Nationals (Rk) | 6-4 | 188 | R-R | 1998-06-07 | 21 | Santiago,Dom Rep | Rk | 2017-2019 | - | Minors | Washington Nationals (Rk) | ||
| Sterling Sharp | P | GCL Nationals (Rk) Auburn (A-) Harrisburg (AA) | 6-4 | 170 | R-R | 1995-05-30 | 24 | Farmington Hills,Michigan | AA | 2014-2019 | - | 2016-22- 664-WAS | Eastern Michigan U., Drury U. | Minors | Washington Nationals (AA) |
| Tony Sipp | P | Potomac (A+) Washington (MLB) | 6-0 | 185 | L-L | 1983-07-12 | 35 | Pascagoula,Mississippi | MLB | 2002-2019 | 2009-2019 | 2004-45-1333-CLE | Mississippi Gulf Coast CC, Clemson U. | Free Agent | (MLB) |
| Brandon Snyder | 1B-3B | Fresno (AAA) | 6-2 | 205 | R-R | 1986-11-23 | 32 | Las Vegas,Nevada | MLB | 2005-2019 | 2010-2018 | 2005- 1- 13-BAL | Minors | Washington Nationals (AAA) | |
| Juan Soto | OF | Washington (MLB) | 6-1 | 185 | L-L | 1998-10-25 | 20 | Santo Domingo,Dom Rep | MLB | 2016-2019 | 2018-2019 | 2015- UDFA-WAS | Active | Washington Nationals (MLB) | |
| Andrew Stevenson | OF | Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-0 | 185 | L-L | 1994-06-01 | 25 | Lafayette,Louisiana | MLB | 2013-2019 | 2017-2019 | 2015- 2- 58-WAS | Louisiana St | Active | Washington Nationals (MLB) |
| Jackson Stoeckinger | P | Hagerstown (A) | 6-3 | 210 | L-L | 1996-02-13 | 23 | Harrodsburg,Kentucky | A | 2017-2019 | - | 2017-12- 373-WAS | Col. Central Florida | Minors | Washington Nationals (A) |
| Stephen Strasburg | P | Washington (MLB) | 6-4 | 220 | R-R | 1988-07-20 | 30 | San Diego,California | MLB | 2007-2019 | 2010-2019 | 2009- 1- 1-WAS | San Diego St | Free Agent | (MLB) |
| Hunter Strickland | P | Washington (MLB) | 6-5 | 200 | R-R | 1988-09-24 | 30 | Thomaston,Georgia | MLB | 2007-2019 | 2014-2019 | 2007-18- 564-BOS | Active | Washington Nationals (MLB) | |
| Kevin Strohschein | OF-P | GCL Nationals (Rk) | 6-0 | 195 | R-R | 1997-07-25 | 21 | McDonough,Georgia | Rk | 2016-2019 | - | 2019-21- 633-WAS | Tennessee Technological U. | Minors | Washington Nationals (Rk) |
| Leif Strom | P | GCL Nationals (Rk) Auburn (A-) Hagerstown (A) | 6-6 | 215 | R-R | 1997-05-17 | 22 | Puyallup,Washington | A | 2017-2019 | - | 2017-21- 643-WAS | Pierce Col | Minors | Washington Nationals (Rk) |
| Wander Suero | P | Washington (MLB) | 6-3 | 175 | R-R | 1991-09-15 | 27 | Sabana Larga,Dom Rep | MLB | 2010-2019 | 2018-2019 | Active | Washington Nationals (MLB) | ||
| Jack Sundberg | OF | GCL Nationals (Rk) Potomac (A+) | 5-11 | 175 | L-R | 1993-07-21 | 25 | Mansfield,Connecticut | A+ | 2013-2019 | - | 2016-26- 784-WAS | Connecticut | Minors | Washington Nationals (A+) |
| Kurt Suzuki | C | Washington (MLB) | 5-11 | 200 | R-R | 1983-10-04 | 35 | Wailuku,Hawaii | MLB | 2002-2019 | 2007-2019 | 2004- 2- 67-OAK | Cal St Fullerton | Active | Washington Nationals (MLB) |
| Ryan Tapani | P | Hagerstown (A) Potomac (A+) | 6-0 | 180 | R-R | 1994-06-28 | 25 | Wayzata,Minnesota | A+ | 2014-2019 | - | 2018-21- 641-WAS | Creighton U., St. Olaf Col | Minors | Washington Nationals (A+) |
| Felix Taveras | P | GCL Nationals (Rk) | 6-2 | 155 | R-R | 1995-07-11 | 23 | Payita,Dom Rep | A- | 2015-2019 | - | Minors | Washington Nationals (Rk) | ||
| Chuck Taylor | OF | Harrisburg (AA) Fresno (AAA) | 5-10 | 175 | B-L | 1993-09-21 | 25 | Arlington,Texas | AAA | 2012-2019 | - | 2012- 4- 153-ARI | Minors | Washington Nationals (AAA) | |
| Michael Taylor | OF | Harrisburg (AA) Washington (MLB) | 6-2 | 190 | R-R | 1991-03-26 | 28 | Fort Lauderdale,Florida | MLB | 2010-2019 | 2014-2019 | 2009- 6- 172-WAS | Active | Washington Nationals (MLB) | |
| Carson Teel | P-OF | Hagerstown (A) Potomac (A+) | 6-0 | 160 | L-L | 1995-12-17 | 23 | Stillwater,Oklahoma | A+ | 2016-2019 | - | 2018-16- 491-WAS | Oklahoma St | Minors | Washington Nationals (AA) |
| Jackson Tetreault | P | Potomac (A+) Harrisburg (AA) | 6-5 | 170 | R-R | 1996-06-03 | 23 | Ruskin,Florida | AA | 2016-2019 | - | 2017- 7- 223-WAS | State Col Florida Manatee-Sarasota, Cameron U. | Minors | Washington Nationals (A+) |
| Edangel Tovar | GCL Nationals (Rk) | - | - | - | Rk | 2018-2019 | - | Minors | Washington Nationals (Rk) | ||||||
| Alex Troop | P | Auburn (A-) Hagerstown (A) | 6-5 | 195 | L-L | 1996-07-19 | 22 | Batavia,Illinois | A | 2015-2019 | - | 2017- 9- 283-WAS | Michigan St | Minors | Washington Nationals (A) |
| Frailin Turbi | C | GCL Nationals (Rk) | 6-0 | 165 | R-R | 2000-10-19 | 18 | Bani,Dom Rep | - | - | (MLB) | ||||
| Trea Turner | SS | Potomac (A+) Washington (MLB) | 6-2 | 160 | R-R | 1993-06-30 | 26 | Lake Worth,Florida | MLB | 2012-2019 | 2015-2019 | 2014- 1- 13-SDN | North Carolina St | Active | Washington Nationals (MLB) |
| Trey Turner | OF-P | Auburn (A-) Hagerstown (A) | 6-1 | 195 | R-R | 1996-06-15 | 23 | Fort Scott,Kansas | A | 2016-2019 | - | 2017-10- 313-WAS | Missouri St, Crowder Col | Minors | Washington Nationals (A-) |
| Armond Upshaw | CF | Hagerstown (A) Potomac (A+) | 6-0 | 190 | B-L | 1996-06-20 | 23 | Newnan,Georgia | A+ | 2015-2019 | - | 2016-11- 334-WAS | Pensacola St | Minors | Washington Nationals (A) |
| Alejandro Vallejo | P | GCL Nationals (Rk) | 6-3 | 184 | R-R | 1998-11-04 | 20 | San Cristobal,Dom Rep | Rk | 2017-2019 | - | Minors | Washington Nationals (Rk) | ||
| Christian Vann | P | Hagerstown (A) | 6-2 | 195 | L-L | 1996-06-25 | 23 | Lilburn,Georgia | A | 2015-2019 | - | 2018-25- 761-WAS | Mercer U., Chattahoochee Valley CC | Minors | Washington Nationals (A) |
| Onix Vega | C | Auburn (A-) | 5-10 | 200 | R-R | 1998-09-07 | 20 | - | A- | 2018-2019 | - | 2018-20- 611-WAS | Broward Col | Minors | Washington Nationals (A-) |
| Jonny Venters | P | Harrisburg (AA) Washington (MLB) | 6-3 | 175 | L-L | 1985-03-20 | 34 | Altamonte Springs,Florida | MLB | 2004-2019 | 2010-2019 | 2003-30- 907-ATL | Indian River St | Free Agent | (MLB) |
| Eduardo Vera | P | Harrisburg (AA) | 6-3 | 177 | R-R | 1994-07-03 | 24 | Yucatan,Mexico | AAA | 2012-2019 | - | Minors | Washington Nationals (A+) | ||
| Trey Vickers | SS | Hagerstown (A) | 6-1 | 185 | R-R | 1995-09-17 | 23 | Lees Summit,Missouri | A | 2015-2019 | - | 2018-30- 911-WAS | Wichita St | Minors | Washington Nationals (A) |
| Austin Voth | P | GCL Nationals (Rk) Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-1 | 189 | R-R | 1992-06-26 | 27 | Redmond,Washington | MLB | 2011-2019 | 2018-2019 | 2013- 5- 166-WAS | Washington | Active | Washington Nationals (MLB) |
| Drew Ward | 3B | Auburn (A-) Harrisburg (AA) Fresno (AAA) | 6-3 | 215 | L-R | 1994-11-25 | 24 | Leedey,Oklahoma | AAA | 2013-2019 | - | 2013- 3- 105-WAS | Minors | Washington Nationals (AAA) | |
| NIck Wells | P | Hagerstown (A) | 6-5 | 180 | L-L | 1996-02-21 | 23 | Alexandria,Virginia | A+ | 2014-2019 | - | 2014- 3- 83-TOR | Minors | Washington Nationals (A) | |
| Austen Williams | P | GCL Nationals (Rk) Harrisburg (AA) Fresno (AAA) Washington (MLB) | 6-3 | 210 | R-R | 1992-12-19 | 26 | Fort Worth,Texas | MLB | 2012-2019 | 2018-2019 | 2014- 6- 184-WAS | Texas St | Active | Washington Nationals (MLB) |
| Ryan Williamson | P | Hagerstown (A) | 6-3 | 195 | L-L | 1995-04-28 | 24 | Cranford,New Jersey | A | 2014-2019 | - | 2016-15- 454-WAS | North Carolina St | Minors | Washington Nationals (A) |
| Amos Willingham | P | Auburn (A-) | 6-4 | 217 | R-R | 1998-08-21 | 20 | Summerville,Georgia | A- | 2017-2019 | - | 2019-17- 513-WAS | Georgia Tech, Snead St CC | Minors | Washington Nationals (A-) |
| Cody Wilson | OF | GCL Nationals (Rk) Auburn (A-) Hagerstown (A) | 6-2 | 200 | R-R | 1996-07-04 | 22 | West Palm Beach,Florida | A | 2018-2019 | - | 2018-13- 401-WAS | Florida Atl U., Palm Beach St | Minors | Washington Nationals (A-) |
| Jacob Wilson | 2B | Fresno (AAA) | 6-0 | 190 | R-R | 1990-07-29 | 28 | Arlington,Tennessee | AAA | 2000-2019 | - | 2012-10- 330-SLN | Memphis | Restricted | Washington Nationals (AAA) |
| Rhett Wiseman | OF | Auburn (A-) Harrisburg (AA) | 5-11 | 187 | L-R | 1994-06-22 | 25 | Mansfield,Massachusetts | AA | 2013-2019 | - | 2015- 3- 103-WAS | Vanderbilt U. | Minors | Washington Nationals (AA) |
| Tyler Yankosky | P | Auburn (A-) | 6-6 | 225 | L-R | 1998-05-28 | 21 | Wilkes-Barre,Pennsylvania | A- | 2019-2019 | - | 2019-19- 573-WAS | Millersville Pennsylvania | Minors | Washington Nationals (A-) |
| Jeremy Ydens | OF | Auburn (A-) | 6-2 | 185 | R-R | 1997-07-30 | 21 | Campbell,California | A- | 2017-2019 | - | 2019- 8- 243-WAS | UCLA | Minors | Washington Nationals (A-) |
| Eddy Yean | P | GCL Nationals (Rk) Auburn (A-) | 6-1 | 180 | R-R | 2001-06-25 | 18 | Sabana Grande De Boya,Dom Rep | A- | 2018-2019 | - | Minors | Washington Nationals (A-) |
