| Zack Raabe | IF | 2019-2020 | Minnesota |
| Chris Rabasco | IF | 2016-2018 | Pennsylvania |
| Nick Rabasco | IF-OF | 2013-2016 | New Jersey Tech, East Stroudsburg Pennsylvania |
| Nick Rabat | C | 2014-2017 | Va. Commonwealth, Hagerstown CC |
| Derrick Rabb | p | 2019-2020 | Maryland-Eastern Shore |
| Desean Rabb | P | 2013-2016 | Coppin State College, Catonsville CC |
| Mike Rabin | OF | 2002-2005 | Ohio State |
| Reece Rabin | P | 2019-2020 | Princeton |
| Ben Rabinowitz | OF | 2007-2008 | Harvard |
| Jake Rabinowitz | P-IF | 2006-2009 | Fordham |
| Alex Raburn | IF-OF | 2013-2017 | North Carolina |
| Wade Raburn | OF | 2017-2019 | New Orleans, Odessa |
| Jacob Raby | --- | 2020-2020 | North Carolina Central |
| Jake Raby | OF-P | 2017-2018 | North Carolina Central |
| Hunter Racca | IF | 2018-2018 | McNeese State |
| Joe Raccuglia | SS-2B | 2006-2007 | Tennessee-Martin |
| Ty Racette | OF | 2002-2003 | Appalachian State, Johnson County CC |
| Trey Rachal | OF | 2005-2005 | Oklahoma State, North Central Texas College |
| Adam Rachlin | OF | 2002-2002 | Kansas, Cypress College, Sonoma State |
| Scott Rachlin | OF | 2002-2003 | South Florida, Shelton State CC |
| Scotty Radabaugh | OF-2B | 2007-2010 | Charleston Southern |
| Chase Radan | P | 2014-2015 | UCLA |
| Mike Radanovic | P | 2003-2007 | Niagara, University at Buffalo |
| Baron Radcliff | OF | 2018-2020 | Georgia Tech |
| Connor Radcliff | P | 2016-2020 | Samford |
| Jeffery Radcliff | 1B | 2012-2012 | Savannah State |
| Khyle Radcliffe | --- | 2020-2020 | Saint Louis |
| Tyler Radcliffe | P | 2015-2018 | Long Beach State |
| Gus Radel | P | 2019-2019 | Minnesota |
| Andrew Rademacher | IF | 2010-2012 | Michigan State |
| Seth Rademacker | P | 2006-2006 | Binghamton, Lincoln Memorial |
| Austin Rader | P | 2017-2017 | Navy |
| Chase Rader | 3B | 2015-2016 | Coffeyville CC, Wichita State |
| Scott Rader | C | 2005-2005 | Hofstra |
| Ry Radermacher | P | 2007-2007 | Texas-Pan American |
| Kevin Radford | IF | 2015-2015 | Virginia |
| Kory Radford | P | 2003-2006 | UNC Charlotte, Elon |
| Michael Radford | UT | 2011-2012 | NC A&T State, Surry CC |
| Ryan Radford | OF | 2005-2006 | Elon, Young Harris College |
| Josh Radke | SS | 2002-2003 | Belmont |
| Ryan Radke | P | 2007-2010 | Hofstra |
| Sean Radke | P | 2004-2005 | Richmond, Iowa |
| Leo Radkowski | IF | 2006-2007 | Nevada, Lamar CC, Texas-Arlington |
| Eric Radley | IF | 2005-2006 | Miami, Volunteer State CC |
| Brandon Radmacher | P | 2014-2017 | North Dakota, John A. Logan College, College of San Mateo, Jamestown College |
| Tim Radmacher | P | 2006-2007 | Nebraska |
| Alex Radon | P | 2009-2012 | Toledo |
| John Radosevich | P | 1965-1965 | West Virginia |
| Matthew Radtka | --- | 2020-2020 | Akron |
| Nate Radtke | IF | 2005-2008 | Cleveland State |
| Tyler Radtke | P | 2012-2016 | Villanova, Iowa |
| Ryan Radue | P | 2013-2017 | Connecticut |
| JP Radvany | 1B | 2016-2019 | Villanova |
| Jason Radwan | 2B | 2010-2013 | St. Bonaventure |
| Tom Radz | C-P | 1999-1999 | Western Illinois |
| Jacob Radziewicz | C | 2019-2020 | Manhattan College |
| Kevin Radziewicz | C | 2015-2018 | Fairfield |
| Frank Radziwon | P | 2004-2005 | Florida State, Palm Beach State College, Bethune-Cookman |
| Sean Rae | P | 2005-2008 | UMD-Baltimore Cty, Frostburg State |
| Eian Raeber | P | 2012-2015 | Northern Colorado, Fresno Pacific University |
| Jake Raether | P | 2017-2018 | Central Michigan |
| Sam Raetz | P | 2012-2013 | Nebraska at Omaha |
| Bill Rafferty | OF | 2007-2010 | Fairfield |
| Bill Rafferty | P | 2007-2010 | Niagara |
| Casey Rafferty | C | 2003-2003 | St. Bonaventure |
| Charlie Rafferty | P | 2019-2019 | Bucknell |
| Danny Rafferty | P | 2014-2017 | Bucknell |
| John Rafferty | P | 2013-2015 | Murray State, Prairie State College |
| Liam Rafferty | P | 2011-2014 | Sacred Heart, Florida Gulf Coast |
| Tim Rafferty | IF | 2002-2006 | Missouri State |
| Carter Raffield | P | 2020-2020 | Clemson |
| Tony Raffio | C | 2000-2002 | Hofstra |
| Jordan Ragan | P | 2017-2018 | Cal State Bakersfield, College of Southern Idaho |
| Joshua Ragan | OF | 2017-2020 | Dallas Baptist, Navarro College, Central Arkansas |
| Marcus Ragan | CF | 2016-2019 | East Mississippi CC, Ark-Little Rock, Faulkner |
| Dominic Ragazzo | IF | 2020-2020 | West Virginia |
| Josh Raggi | P | 2008-2009 | Cleveland State |
| Darrien Ragins | P | 2015-2018 | Delaware State, Keiser |
| Andrew Ragland | H | 2006-2006 | Alabama A&M |
| Antoine Ragland | H | 2006-2006 | Alabama A&M |
| Daniel Ragland | 3B | 1970-1970 | Ranger College, Texas A&M |
| Troy Ragle | P | 2003-2007 | Indiana, Kentucky |
| Taylor Raglin | 1B | 2013-2013 | Stephen F. Austin |
| Jason Rago | OF | 2007-2010 | Fairfield |
| Kyle Rago | P | 2015-2016 | Toledo |
| Cole Ragone | IF | 2019-2020 | William and Mary |
| Nick Ragone | IF | 2002-2004 | SUNY - Albany |
| Austin Ragsdale | P | 2014-2018 | Sacramento State |
| Cameron Ragsdale | P-C | 2014-2017 | Florida Atlantic, Gulf Coast CC |
| Carson Ragsdale | P-1B | 2017-2020 | South Florida |
| George Ragsdale | IF | 2013-2015 | Virginia, Santa Fe CC, Shorter |
| Zach Ragsdale | OF | 2010-2010 | Ark-Little Rock, North Central Texas College |
| T.J. Raguse | 1B-OF | 2016-2019 | Baylor |
| Bryson Rahler | C | 2008-2010 | San Jose State |
| Spence Rahm | IF-P | 2013-2016 | Sam Houston State |
| Christian Rahman | P | 2010-2013 | Iona College, Rowan |
| Gerrio Rahming | OF | 2015-2018 | Georgia State, Columbus State |
| Justin Rahn | H | 2008-2008 | Illinois State, St. Louis CC-Meramec, Wabash Valley College |
| Michael Raia | P | 2008-2010 | South Alabama |
| Mike Raible | OF | 2004-2007 | Lafayette College |
| Evan Raiburn | P-IF | 2018-2018 | Fairleigh Dickinson |
| Pat Raiff | OF | 2016-2018 | USC-Upstate, South Carolina-Salkehatchie |
| John Raiford | P | 2006-2008 | North Florida |
| Elliott Raimo | P | 2017-2020 | George Washington |
| Sean Rainbird | OF-P | 2008-2008 | Army |
| Rashard Raine | OF | 2018-2019 | Southern, Gulf Coast CC |
| Lucio Rainelli | P | 2005-2006 | Savannah State |
| Alex Raines | C | 2017-2019 | Winthrop |
| Jake Rainess | IF | 2020-2020 | Maine |
| Drew Rainey | P | 2011-2012 | Wichita State, Kansas City CC |
| Ian Rainey | P | 2005-2006 | Bucknell, UC San Diego |
| Trevor Rainey | OF | 2009-2010 | Houston Baptist, Texarkana College |
| Wade Rainey | IF | 2003-2004 | Memphis |
| Brandon Rainford | P | 2011-2011 | UNLV |
| Michael Rains | C | 2010-2010 | Houston Baptist |
| Marlon Rainville | OF | 2016-2016 | Cornell |
| JD Rainwater | IF | 2016-2017 | Arkansas State |
| Michael Rainwater | C | 2013-2013 | Mercer |
| Nick Rainwater | IF | 2004-2007 | Illinois-Chicago |
| Sam Rainwater | P | 2019-2020 | Oral Roberts |
| Tanner Rainwater | P | 2007-2007 | Sam Houston State |
| Kevin Raisbeck | IF | 2017-2020 | Western Illinois, Ellsworth CC |
| Cody Raisch | P | 2008-2008 | Campbell, Coe College |
| Dellan Raish | P | 2018-2018 | Arizona State |
| Kameron Raison | P | 2014-2015 | Maryland-Eastern Shore |
| Jesse Rait | OF | 2012-2015 | Bowling Green State |
| Krishna Raj | P | 2019-2020 | Tulane |
| David Rajeski | P | 2018-2020 | Pacific, College of San Mateo |
| Pete Rajkovich | IF | 2011-2014 | Centenary College, San Joaquin Delta College, Carson-Newman |
| Dan Rajkowski | P | 2016-2018 | Connecticut |
| Cole Rakar | OF | 2008-2011 | College of Charleston |
| Mike Rakoczy | P | 2003-2004 | Rider |
| Ben Rakus | P | 2013-2015 | Stetson |
| Keith Rakus | P | 2006-2009 | Vermont |
| Matt Rakus | P | 2012-2015 | New Jersey Tech, Gwynedd-Mercy College |
| Antonio Ralat | SS | 2016-2019 | Alabama-Birmingham, Palm Beach State College |
| Kyle Raleigh | P | 2011-2014 | Ball State |
| Cory Raley | SS | 2013-2016 | Texas A&M, Temple College, Texas Tech |
| Danny Raley | OF | 2015-2015 | UNC Charlotte |
| Evan Raley | IF | 2008-2009 | Texas-Arlington, Central Arizona College |
| Lee Raley | IF-C | 2013-2017 | Central Arkansas, McLennan CC |
| Patrick Raley | C | 2012-2015 | UNC Charlotte |
| Brian Rall | C | 2019-2020 | High Point |
| Troy Rallings | P | 2013-2016 | Washington |
| Trey Rallis | IF | 2010-2011 | Yale |
| Derek Rallo | 1B-OF | 2011-2011 | Southern Illinois |
| Ryan Rallo | OF | 2000-2004 | Missouri |
| Al Ralston | C | 2011-2013 | Texas Christian |
| John Ralston | SS | 2008-2011 | Rider |
| Ryan Ralston | P | 2015-2019 | Kansas |
| Darian Ramage | IF | 2013-2015 | St. Mary's (CA) |
| Dylan Ramage | P | 2014-2015 | Morehead State, Southeastern CC, St. Cloud State |
| Kole Ramage | P | 2018-2020 | Arkansas |
| Nick Ramanjulu | P | 2019-2020 | Elon, Towson |
| J.C. Ramatowski | IF | 2007-2007 | Wright State, Maple Woods CC |
| Paul Rambaud | OF | 2010-2013 | Villanova |
| Scott Rambo | P | 2002-2005 | Delaware |
| Brett Ramey | P | 2015-2015 | Ark-Little Rock, Southeast CC |
| Jordan Ramey | OF | 2017-2018 | Cincinnati |
| Matt Ramie | 1B | 2000-2000 | Hawaii Pacific |
| Adrian Ramirez | OF | 2013-2015 | New Mexico State, Lamar CC |
| Alex Ramirez | --- | 2020-2020 | Rhode Island |
| Anthony Ramirez | OF | 2017-2017 | Incarnate Word |
| Antonio Ramirez | UT | 2013-2014 | Texas-San Antonio, Clarendon College |
| Ariel Ramirez | O | 2011-2014 | Saint Peter's |
| Ben Ramirez | SS | 2018-2020 | USC |
| Bryan Ramirez | P | 2011-2012 | Old Dominion |
| Bryan Ramirez | IF | 2013-2017 | Texas-Pan American, St. Mary's |
| Carlo Ramirez | OF | 2011-2011 | Kansas, St. Martin's University |
| Carlos Ramirez | P-OF | 2011-2011 | Maine |
| Chris Ramirez | OF | 2004-2005 | High Point, Kirkwood CC |
| Cortlynn Ramirez | IF-P | 2019-2020 | New Orleans |
| Edgar Ramirez | 2B | 2006-2007 | Troy |
| Eric Ramirez | 1B | 2015-2018 | Hawaii |
| Gaby Ramirez | C | 2010-2011 | Wagner |
| Jaime Ramirez | P | 2020-2020 | Texas A&M-Corpus Christi |
| Javier Ramirez | IF | 2018-2020 | Jacksonville State, Taft College |
| John Ross Ramirez | P | 2005-2008 | Lamar |
| Jose Ramirez | P | 2008-2010 | Sacramento State, American River College |
| Leno Ramirez | IF | 2016-2017 | Tennessee, Dodge City CC, Cameron |
| Luis Ramirez | --- | 2020-2020 | Long Beach State |
| Mikey Ramirez | P | 2013-2014 | Arkansas-Pine Bluff |
| Nathaniel Ramirez | P | 2006-2006 | Texas A&M-Corpus Christi |
| Ovy Ramirez | IF | 2006-2006 | Florida Atlantic, St. Petersburg College |
| Paul Ramirez | P | 2006-2006 | Coppin State College |
| R Ramirez | H | 2005-2006 | Texas Southern |
| Rafael Ramirez | IF | 2017-2020 | Grambling State |
| Ricky Ramirez | P | 2017-2018 | Central Arkansas, Eastern Oklahoma State College |
| Ronnie Ramirez | P | 2016-2016 | Florida State |
| Sam Ramirez | P | 2001-2002 | USC |
| Ty Ramirez | P | 2016-2017 | Creighton, Heartland CC |
| Aquib Ramkishun | P | 2017-2020 | New Jersey Tech |
| Jonathan Ramon | IF | 2013-2016 | Evansville |
| Julian Ramon | C | 2012-2015 | Cal State Northridge, Oxnard College, Lewis-Clark State College |
| Ralph Ramon | C | 2004-2004 | Prairie View A&M, Frank Phillips College |
| Alberto Ramos | OF | 2002-2002 | Louisiana-Lafayette, Seminole Florida |
| Angel Ramos | OF | 2001-2002 | Liberty |
| Anthony Ramos | OF-P | 2017-2020 | Saint Peter's |
| Ciji Ramos | P | 2013-2016 | Arkansas-Pine Bluff, Cochise College |
| Cristian Ramos | P | 2020-2020 | Texas-Pan American, Laredo CC |
| Daniel Ramos | C | 2004-2005 | Columbia |
| Javier Ramos | P-IF | 2019-2019 | Missouri State |
| Jorge Ramos | P | 2006-2008 | Florida Intl |
| Jose Ramos | 3B | 2001-2002 | Bethune-Cookman, Garden City CC |
| Julio Ramos | P | 2002-2002 | Massachusetts |
| Marco Ramos | OF | 2015-2018 | Louisiana-Lafayette, Seminole State College |
| Marcos Ramos | P | 2002-2003 | Rice |
| Nick Ramos | IF | 2013-2015 | Indiana |
| Nick Ramos | IF | 2014-2017 | Stephen F. Austin |
| Nico Ramos | C | 2017-2019 | Siena College |
| Rigo Ramos | P | 2020-2020 | Bowling Green State |
| Roberto Ramos | OF | 2003-2006 | Dayton |
| Victor Ramos | IF | 2011-2011 | Marshall, Tennessee Temple |
| Jarrod Rampey | P | 2003-2006 | Wofford, Binghamton |
| Blake Rampy | P | 2004-2008 | Texas A&M |
| Alex Ramsay | C | 2011-2015 | Maryland, Millersville Pennsylvania |
| Bryce Ramsay | C | 2017-2020 | Hartford |
| Dan Ramsay | C | 2006-2006 | Gonzaga, Whitworth |
| Matthew Ramsay | C | 2012-2016 | Wofford, Michigan |
| Robert Ramsdale | P | 2008-2009 | Savannah State |
| Bobby Ramsey | P | 2017-2019 | Fairleigh Dickinson, State U. College at New Paltz |
| Chad Ramsey | P-1B | 2014-2014 | New Mexico State |
| Chris Ramsey | IF-C | 2004-2005 | Coppin State College |
| Clint Ramsey | 3B-P | 2002-2005 | Western Carolina |
| Colt Ramsey | P | 2013-2017 | Georgia Southern, Chattahoochee Val |
| Cory Ramsey | P | 2011-2014 | Longwood |
| Eric Ramsey | OF | 2013-2016 | Wake Forest, George Washington |
| Jimmy Ramsey | P | 2018-2020 | Kentucky |
| Joel Ramsey | IF-P | 2006-2006 | Louisiana-Monroe |
| Keith Ramsey | OF | 1999-2002 | Temple |
| Nolan Ramsey | OF-P | 2016-2019 | Alabama A&M, Alabama-Huntsville |
| Riley Ramsey | P | 2020-2020 | Texas Tech, Richland College |
| Ryan Ramsey | IF-P | 2005-2005 | Troy |
| Ryan Ramsey | P | 2020-2020 | Maryland |
| Saunders Ramsey | P | 2002-2005 | Mississippi State |
| Steve Ramsey | OF-1B | 2001-2003 | Washington |
| Stone Ramsey | IF | 2013-2017 | Utah Valley U |
| Trey Ramsey | P | 2016-2019 | Princeton |
| Tyler Ramsey | C | 2015-2015 | Delaware State |
| Walker Ramsey | P | 2016-2019 | Utah Valley U, Paradise Valley |
| Jimmy Ramshaw | P | 2000-2002 | Florida, Lewis-Clark State College |
| Ryan Ramsower | IF | 2016-2018 | Washington State, Pima CC |
| Ben Rand | OF | 2001-2003 | Va Military Inst., Va. Commonwealth |
| Nick Rand | P | 2016-2019 | Massachusetts-Lowell |
| Sean Rand | OF | 2005-2005 | UNLV |
| Tyler Rand | OF | 2016-2017 | Texas |
| Justin Randa | P | 2006-2006 | Louisiana-Lafayette, Barton County CC |
| Trey Randa | P | 2005-2006 | Kansas, Cowley College |
| Aaron Randall | 1B | 2003-2006 | Grambling State |
| Clay Randall | --- | 2020-2020 | Air Force |
| Corey Randall | P | 2013-2016 | UNC Asheville |
| David Randall | P | 2009-2013 | Mercer |
| Jason Randall | C | 2000-2003 | The Citadel |
| Joe Randall | P | 2014-2015 | Fairfield |
| Scott Randall | P | 2018-2020 | Sacramento State |
| Greg Randazza | P | 1988-1988 | Auburn |
| Brian Randazzo | 2B | 2008-2009 | University at Buffalo |
| Mike Randazzo | P | 2019-2020 | Bryant University |
| Laurn Randell | OF | 2007-2010 | Texas State |
| Rodney Randers | P | 2017-2017 | Florida A&M |
| K.J. Randhawa | SS | 2007-2010 | Air Force |
| Anthony Randich | 1B | 2008-2009 | St. Bonaventure |
| Jamari Randle | 1B | 2017-2018 | Alabama State, Clark Atlanta |
| Ryne Randle | IF-OF | 2017-2020 | Abilene Christian, Grayson County College |
| Tyler Rando | C | 2020-2020 | Gonzaga, Mission College |
| Jeff Randol | OF | 2004-2006 | Campbell, Southeastern CC-Whiteville |
| Hezekiah Randolph | OF | 2014-2017 | New Orleans |
| Jeff Randolph | P | 2009-2009 | Towson |
| Mason Randolph | C | 2011-2014 | Texas Tech |
| Matt Randolph | P | 2017-2018 | Georgetown, Emory |
| Trevor Randolph | 2B | 2010-2010 | Southern Utah |
| Zack Randolph | C | 2014-2014 | Mississippi State, Itawamba CC |
| Yash Rane | P | 2018-2020 | Lehigh |
| Rich Ranells | IF | 2006-2007 | Cleveland State, Lakeland CC |
| Jackson Ranes | C | 2003-2003 | Air Force |
| Aaron Ranft | 3B-OF | 2003-2005 | Radford, Lenoir CC |
| Michael Range | OF | 2006-2007 | Bethune-Cookman |
| Joe Raniszewski | P | 2003-2006 | Lehigh |
| Aaron Rank | P-IF | 2006-2006 | Valparaiso |
| Tyler Rank | P | 2008-2009 | Nebraska |
| Chris Rankhorn | IF | 2008-2009 | East Tennessee State, Volunteer State CC |
| Ausar Rankin | OF-C | 2016-2019 | North Carolina Central, Rockingham CC |
| Bill Rankin | P | 2003-2007 | Massachusetts |
| Dan Rankin | P | 2013-2016 | Tulane |
| Wade Rankin | --- | 2020-2020 | Northern Illinois |
| Kevin Rankowitz | C | 2001-2002 | Quinnipiac |
| Matt Ransbottom | P | 2007-2011 | Indiana U.-Purdue U.-FW |
| Matt Ransdell | IF | 2002-2006 | Western Kentucky |
| Eric Ransom | P | 2009-2012 | Savannah State |
| Zach Ransom | P | 2011-2013 | North Dakota, Madison Area Technical College |
| Eric Ranson | 1B | 2011-2014 | Tennessee-Martin, University at Buffalo |
| Alex Rao | P | 2019-2020 | Notre Dame |
| Diego Rapalino | P | 2013-2013 | South Florida |
| Alex Rapanos | IF | 2014-2014 | Michigan State |
| Jonathan Rapavi | P-OF | 2005-2005 | Tennessee |
| Sean Rape | P | 2018-2020 | Jacksonville State |
| Dylan Raper | OF | 2012-2015 | Oklahoma, Seminole State College, Central Oklahoma |
| Ryan Raper | IF | 2012-2017 | Kennesaw State, North Georgia, UWGA |
| Blake Rapoport | IF | 2018-2018 | Lehigh |
| Adam Rapoza | P | 2007-2007 | Jacksonville, Santa Fe CC |
| Adam Rapp | C | 2016-2018 | Delaware, Harford CC, Morehead State |
| Kyle Rapp | OF | 2006-2007 | Cincinnati, Wabash Valley College |
| Shawn Rapp | P | 2020-2020 | North Carolina |
| Gabe Rappa | P | 2020-2020 | La Salle |
| Jake Rappaport | P | 2018-2020 | New Jersey Tech |
| Taylor Rappaport | P | 2012-2014 | Kansas |
| Hayden Rappoport | OF | 2015-2018 | Dartmouth |
| Rhett Rapshus | P | 2015-2019 | Illinois State, Black Hawk College |
| Brandon Raquet | OF | 2017-2020 | William and Mary |
| Ed Ras | P | 2010-2013 | Seton Hall |
| Tyler Ras | P | 2019-2020 | Alabama |
| Clayton Rasbeary | OF | 2017-2020 | Stephen F. Austin, Grayson County College, McNeese State |
| John Rasberry | C | 2010-2011 | Norfolk State |
| Jonathan Rasberry | C | 2006-2006 | Auburn, Lurleen B. Wallace CC |
| Zacchaeus Rasberry | OF | 2017-2020 | Presbyterian College, Louisburg College |
| Keelin Rasch | 3B | 2013-2015 | John A. Logan College, Louisiana-Monroe |
| Dustin Rasco | P | 2006-2009 | Kansas State, Long Beach State |
| Alec Rash | P | 2013-2015 | Missouri |
| Andrew Rash | OF | 2009-2013 | Virginia Tech |
| Austin Rash | P | 2016-2016 | Va Military Inst. |
| Jordan Rash | C | 2007-2007 | Navy |
| Hayden Rasica | P | 2020-2020 | Oregon |
| Jordan Rasinski | P | 2009-2012 | Central Florida, West Florida |
| Tony Rask | --- | 2020-2020 | Southern Illinois |
| Jim Raska | P | 1976-1976 | Baltimore City CC, Maryland |
| Chris Rasky | OF-1B | 2010-2013 | West Virginia |
| Ryan Raslowsky | IF | 2012-2015 | Cal State Northridge |
| Cyle Rasmus | SS-2B | 2011-2012 | Elon, Columbus State |
| Craig Rasmussen | P | 2008-2011 | San Diego State |
| Eric Rasmussen | C | 2003-2006 | Yale |
| James Rasmussen | OF | 2010-2013 | Stetson |
| Luke Rasmussen | P-OF | 2008-2011 | Minnesota |
| Luke Rasmussen | 1B-OF | 2015-2019 | Long Beach State |
| Mark Rasmussen | P | 2003-2006 | Western Michigan |
| Phil Rasmussen | P | 2006-2006 | UC Davis, Fresno State |
| Ryan Rasmussen | 2B | 2001-2002 | UCLA, Riverside CC |
| Ty Rasmussen | OF-1B | 2007-2009 | Washington, Louisiana-Lafayette |
| Victor Rasor-Thompson | OF | 2009-2012 | San Diego, Cal State Monterey Bay, San Diego Mesa College, College of San Mateo |
| Ryan Raspino | IF | 2013-2016 | South Alabama, Central Alabama CC |
| Steve Rassel | IF-OF | 2007-2008 | Florida Gulf Coast, Lake City CC |
| Brett Rasso | OF | 2015-2018 | St. Mary's (CA) |
| Garrett Rast | C | 2015-2015 | Winthrop |
| Korey Rasure | P | 2015-2017 | Texas A&M-Corpus Christi, Cisco Junior College |
| Steve Raszka | 1B-OF | 2003-2005 | Bowling Green State |
| Jeremy Rataczyk | IF | 2011-2011 | Chicago State, Indiana U. Northwest |
| Jeremy Ratajczyk | IF | 2012-2012 | Chicago State, Indiana U. Northwest |
| Lance Ratchford | COACH | 2011-2011 | Keystone College |
| Frankie Ratcliff | IF | 2010-2014 | Miami, Pensacola State College, Houston |
| Zach Ratcliff | 1B | 2013-2017 | Ohio State |
| Colin Ratcliffe | P | 2006-2006 | Duke |
| Keith Ratcliffe | P | 2001-2005 | Wagner |
| Jacob Rateliff | P | 2014-2017 | Ark-Little Rock, Johnson County CC |
| Nick Rath | P | 2001-2003 | Louisiana Tech |
| Steve Rath | IF | 1994-1994 | Cal State Fullerton, Golden West College |
| Jordan Rathbone | C-OF | 2017-2020 | Gonzaga, South Mountain CC, Central Florida |
| Cole Rathbun | C | 2004-2006 | Western Michigan |
| Beau Rathjen | OF | 2013-2013 | Rice |
| Tyler Rathjen | P | 2013-2016 | Butler, San Diego Mesa College |
| Michael Ratigan | P | 2007-2010 | Washington State |
| Jonathan Ratledge | OF | 2006-2009 | South Carolina, East Carolina |
| Matt Ratliff | P | 2007-2008 | Utah Valley U, Dixie State College |
| Scott Ratliff | P | 2002-2004 | Massachusetts |
| Matt Ratner | P | 2015-2018 | Columbia, Lehigh |
| Nolan Rattai | IF | 2017-2019 | Northern Kentucky, Midland College, Columbia College |
| Etienne Ratte-Delorme | P | 2005-2006 | Saint Louis, Northeastern Oklahoma A&M College |
| Lee Rattigan | OF | 2004-2005 | Richmond |
| Jake Ratz | IF | 2013-2014 | Ellsworth CC, South Dakota State |
| Caleb Ratzman | OF | 2013-2016 | Illinois State, Indian Hills CC-Centerville, Lindsey Wilson College |
| Kyle Raubinger | 1B | 2012-2015 | Loyola Marymount, Cuesta College |
| Brandon Rauch | OF | 2004-2004 | San Diego State, Chico State |
| Mike Raudenbush | C-OF | 2008-2010 | Northern Colorado, Otero Junior College |
| Russell Rauh | C | 2017-2017 | Florida A&M |
| Terry Rauk | OF | 2003-2003 | Northern Illinois |
| Curtis Raulinaitis | OF-IF | 2009-2010 | Oregon, Sacramento City College |
| Keith Raulinaitis | P | 2002-2003 | UC Irvine, Sacramento City College |
| Bradley Raulston | P-OF | 2011-2014 | Jacksonville State |
| John Raus | OF | 2002-2003 | Holy Cross |
| Kyle Rausch | --- | 2020-2020 | Navy |
| Richard Rausch | OF | 2009-2009 | Tennessee Tech |
| Sean Rausch | C-OF | 2017-2019 | Hofstra |
| Christian Rautenstrauch | P | 2010-2011 | Wagner |
| Mike Rauwerdink | P | 2005-2007 | Wisconsin, Lakeland CC |
| Raymond Ravago | IF | 2004-2006 | Cal State Northridge |
| Timothy Ravare | IF | 2014-2017 | NC A&T State |
| Aaron Rave | 1B | 2006-2006 | SE Missouri State |
| Rayne Raven | P | 2013-2016 | Cal State Northridge, Southern Nevada, Western Nevada CC |
| Jimmy Raviele | P | 2006-2009 | Houston |
| Mitch Ravizza | OF | 2013-2016 | San Jose State |
| Rand Ravnaas | OF | 2009-2012 | Georgetown |
| Frank Rawdow | IF | 2009-2013 | Mississippi State, Saint Leo |
| Keifer Rawlings | UT | 2015-2018 | Bucknell |
| Kyle Rawlings | P | 2006-2008 | Toledo, College of Wooster |
| Keahi Rawlins | P | 2003-2006 | Hawaii |
| Eli Rawlinson | OF | 2018-2020 | Bradley |
| James Rawls | R-R | 2009-2009 | South Carolina |
| Kevin Rawls | OF | 2007-2008 | Central Arkansas, Odessa |
| Landon Rawson | P | 2020-2020 | SE Louisiana |
| Quinn Rawson | 1B | 2015-2015 | New Mexico |
| William Rawson | OF | 2012-2013 | Saint Peter's |
| Zach Rawson | OF | 2014-2015 | Saint Peter's |
| Alex Ray | IF | 2017-2020 | Florida Atlantic, Tallahassee CC, Louisiana Tech |
| Austin Ray | P | 2014-2014 | Sam Houston State |
| Blaine Ray | OF | 2018-2020 | Kansas |
| Bradley Ray | H | 2007-2009 | Auburn, Calhoun CC |
| Bryce Ray | IF | 2020-2020 | Morehead State |
| Conrad Ray | P | 2019-2019 | Arkansas State |
| Cullen Ray | C | 2017-2020 | Arkansas State |
| Dylan Ray | P | 2008-2011 | Lipscomb, Austin Peay |
| Harrison Ray | IF | 2017-2020 | Vanderbilt |
| Jackson Ray | P | 2017-2020 | La Salle |
| James Ray | 3B | 2003-2006 | Austin Peay |
| Jamie Ray | OF | 2005-2008 | East Carolina |
| John Wesley Ray | P | 2015-2015 | Mississippi, Delta State |
| Johnny Ray | P | 2019-2020 | Illinois State, John A. Logan College, Texas Christian |
| Josh Ray | OF | 2010-2011 | North Dakota, Mt. San Jacinto College |
| Matt Ray | IF-OF | 2007-2007 | Middle Tenn State |
| Matt Ray | IF | 2008-2012 | Davidson College |
| Michael Ray | P | 2014-2017 | Belmont, Lee University, Santa Fe CC |
| Michael Ray | UTL | 2018-2019 | The Citadel |
| Nick Ray | IF | 2012-2012 | Campbell, Jones County Junior College |
| Nick Ray | UT | 2019-2020 | SE Louisiana |
| Parker Ray | P | 2010-2014 | Texas A&M, Texarkana College |
| Sam Ray | C | 2005-2007 | UCLA |
| Sean Ray | P | 2008-2011 | Auburn |
| Tyler Ray | P | 2009-2012 | Troy |
| Tyler Ray | C | 2012-2013 | Alabama State |
| Will Ray | IF-P | 2015-2018 | Marshall, Olney Central College |
| Jansen Rayborn | IF | 2002-2004 | South Alabama, Jefferson Davis CC |
| Seth Rayburn | P | 2015-2018 | Tennessee-Martin, Mt. Hood CC |
| Tucker Rayburn | OF-3B | 2017-2020 | Florida A&M, Tallahassee CC |
| Travis Rayford | P | 2005-2006 | Alabama State |
| Justin Rayment | P | 1996-1996 | San Diego State |
| David Raymer | OF | 2000-2002 | LSU, Sacramento City College |
| Brian Raymond | IF | 2001-2004 | Illinois |
| Brian Raymond | --- | 2020-2020 | Western Illinois |
| Daniel Raymond | C | 2002-2005 | Louisiana-Monroe |
| Dewey Raymond | 3B | 2004-2006 | Fairfield |
| Jacob Raymond | IF-P | 2018-2019 | Oakland |
| Louis Raymond | P | 2015-2018 | San Francisco, Cuesta College, Los Angeles CC, UC Irvine |
| Tyler Raymond | 1B | 2012-2015 | Kentucky, Sinclair CC, King College (Tenn.) |
| Brad Raynor | OF | 2009-2010 | UNC-Greensboro |
| Drew Raynor | C | 2006-2006 | Mercer |
| Juan Razo | P | 2003-2004 | Texas Tech, San Diego City College |
| 443 record(s) |