| - | Ryan Adams | 2B | MLB | 6-0 | 185 | Right | Right | 4/21/1987 | 25 | New Orleans,Louisiana | 2006 | 2 | 58 | BAL |
|
| 50 | Aaron Baker | 1B | AA | 6-2 | 220 | Left | Right | 9/10/1987 | 24 | Denton,Texas | 2009 | 11 | 325 | PIT |
| 28 | Sander Beck | P | A | 6-3 | 195 | Right | Right | 10/3/1990 | 21 | Severna Park,Maryland | 2011 | 33 | 995 | BAL |
| 4 | Roderick Bernadina | RF-CF | A+ | 6-1 | 162 | Right | Right | 8/10/1992 | 19 | Willemstad,Curacao | | UDFA | | |
| 14 | Mark Blackmar | P | A | 6-2 | 205 | Right | Right | 4/28/1992 | 20 | Corpus Christi,Texas | 2011 | 16 | 485 | BAL |
| 34 | Torsten Boss | 3B | A+ | 6-0 | 180 | Left | Right | 12/27/1990 | 21 | Lowell,Michigan | 2012 | 8 | 252 | BAL |
| 12 | Doug Bream | 1B | A- | 6-2 | 210 | Left | Left | 5/30/1989 | 23 | Elizabethtown,Pennsylvania | | UDFA | | |
| 51 | Anthony Caronia | SS-2B | A+ | 5-11 | 165 | Right | Right | 5/22/1991 | 21 | Orlando,Florida | 2012 | 27 | 822 | BAL |
| 33 | Cameron Coffey | P | A | 6-5 | 215 | Left | Left | 9/20/1990 | 21 | Houston,Texas | 2009 | 22 | 656 | BAL |
| 38 | Adam Davis | C | A+ | 6-1 | 205 | Right | Right | 12/15/1989 | 22 | Bloomingdale,Illinois | 2011 | 11 | 335 | BAL |
| 19 | Cameron Edman | 1B | A- | 6-2 | 205 | Right | Right | 6/17/1988 | 24 | Florence,Montana | 2011 | 29 | 875 | BAL |
| 22 | Gene Escat | P | A+ | 6-5 | 190 | Right | Right | 9/3/1989 | 22 | Honolulu,Hawaii | 2012 | 23 | 702 | BAL |
| 5 | Jaime Esquivel | P | A+ | 6-2 | 185 | Right | Right | 5/25/1992 | 20 | Houston,Texas | 2010 | 28 | 838 | BAL |
| 22 | Jesse Fernandez | P | A- | 6-2 | 225 | Right | Right | 1/24/1990 | 22 | Miami,Florida | | UDFA | | |
| 26 | Kevin Gausman | P | MLB | 6-4 | 170 | Left | Right | 1/6/1991 | 21 | Centennial,Colorado | 2012 | 1 | 4 | BAL |
| 20 | Juan Guzman | P | A | 6-0 | 160 | Right | Right | 2/25/1991 | 21 | San Pedro de Macoris,Dominican Republic | | UDFA | | |
| 12 | Josh Hader | P | A | 6-3 | 160 | Left | Left | 4/7/1994 | 18 | Millersville,Maryland | 2012 | 19 | 582 | BAL |
| 32 | Lucas Herbst | RF | A | 6-0 | 183 | Left | Left | 9/9/1990 | 21 | Monterey,California | 2012 | 26 | 792 | BAL |
| 36 | Manuel Hernandez | LF-RF | A- | 6-1 | 190 | Right | Right | 8/19/1992 | 19 | Guatemala City,Guatemala | | UDFA | | |
| 30 | Will Howard | LF | A- | 6-3 | 161 | Left | Left | 1/6/1989 | 23 | Columbus,Georgia | 2012 | 22 | 672 | BAL |
| 16 | Joel Hutter | SS | A | 6-1 | 210 | Right | Right | 2/28/1990 | 22 | Davenport,Iowa | 2012 | 10 | 312 | BAL |
| 26 | Enrico Jimenez | P | A- | 6-3 | 195 | Left | Left | 2/7/1989 | 23 | La Romana,Dominican Republic | 2010 | UDFA | | BAL |
| 43 | Scott Kalush | C | A- | 6-1 | 205 | Right | Right | 3/22/1990 | 22 | San Francisco,California | 2012 | 39 | 1182 | BAL |
| 1 | Sam Kimmel | C | A- | 6-0 | 185 | Left | Right | 11/3/1989 | 22 | West Palm Beach,Florida | 2012 | 18 | 552 | BAL |
| 23 | Branden Kline | P | A | 6-3 | 185 | Right | Right | 9/29/1991 | 20 | Frederick,Maryland | 2012 | 2 | 65 | BAL |
| 9 | Dudley Leonora | 3B-2B | A | 6-1 | 154 | Right | Right | 12/15/1991 | 20 | Saint Maarten,Netherlands | 2010 | UDFA | | BAL |
| 12 | Gregory Lorenzo | CF | A | 6-0 | 160 | Right | Right | 5/31/1991 | 21 | San Pedro de Macoris,Dominican Republic | | UDFA | | |
| 25 | Jason McCracken | P | A | 6-4 | 225 | Right | Right | 9/4/1991 | 20 | Poway,California | 2011 | 42 | 1265 | BAL |
| 2 | Jhondaniel Medina | P | A+ | 5-11 | 158 | Right | Right | 2/8/1993 | 19 | Maracay,Venezuela | | UDFA | | |
| 4 | Alexander Mercedes | 2B | A- | 6-0 | 160 | Right | Right | 3/20/1992 | 20 | La Romana,Dominican Republic | | UDFA | | |
| 55 | Jose Nivar | P | A | 6-1 | 170 | Both | Right | 2/28/1989 | 23 | La Romana,Dominican Republic | 2009 | UDFA | | BAL |
| 10 | Roberto Ortiz | RF | A | 6-1 | 195 | Right | Right | 10/28/1988 | 23 | Santurce,Puerto Rico | 2010 | UDFA | | ARI |
| - | Ryan Palsha | P | A | 6-1 | 180 | Right | Right | 5/17/1990 | 22 | Danville,California | 2009 | 16 | 476 | BAL |
| 21 | Bennett Parry | P | A | 6-6 | 215 | Left | Left | 8/7/1991 | 20 | Poway,California | 2011 | 40 | 1205 | BAL |
| 2 | Jerome Pena | 2B | A+ | 5-11 | 180 | Both | Right | 11/6/1988 | 23 | Cave Creek,Arizona | 2011 | 38 | 1145 | BAL |
| 24 | Pedro Perez | C | A | 5-11 | 170 | Right | Right | 5/8/1991 | 21 | San Pedro de Macoris,Dominican Republic | | UDFA | | |
| - | Zach Petersime | P | AAA | 6-2 | 175 | Right | Right | 1/19/1989 | 23 | Greenwood,Indiana | 2008 | 45 | 1345 | BAL |
| 9 | Elias Pinales | P | A- | 6-4 | 155 | Left | Left | 11/7/1992 | 19 | Bajos de Haina,Dominican Republic | | UDFA | | |
| 13 | Kris Richards | 1B-3B | A- | 6-0 | 185 | Right | Right | 12/6/1989 | 22 | Great Falls,Montana | | UDFA | | |
| 44 | David Richardson | P | A- | 5-11 | 170 | Right | Right | 1/31/1991 | 21 | Tampa,Florida | 2010 | 17 | 508 | BAL |
| 40 | Jorge Rivera | P | A | 6-0 | 200 | Left | Left | 10/30/1990 | 21 | Barahona,Dominican Republic | | UDFA | | |
| - | Brian Roberts | 2B | MLB | 5-9 | 170 | Both | Right | 10/9/1977 | 34 | Durham,North Carolina | 1999 | 1 | 50 | BAL |
| 41 | Lex Rutledge | P | A | 6-1 | 185 | Left | Left | 6/28/1991 | 21 | Tupelo,Mississippi | 2012 | 6 | 192 | BAL |
| 17 | Domingo Salas | P | A- | 6-2 | 170 | Right | Right | 5/11/1991 | 21 | Hato Mayor,Dominican Republic | | UDFA | | |
| 20 | Alexander Santana | P | A- | 5-11 | 170 | Both | Right | 8/26/1991 | 20 | Quisqueya,Dominican Republic | | UDFA | | |
| 13 | Alex Schmarzo | P | A | 6-3 | 185 | Right | Right | 2/28/1989 | 23 | Cincinnati,Ohio | 2010 | 48 | 1438 | BAL |
| 37 | Cory Segui | 3B | A- | 6-1 | 200 | Right | Right | 12/20/1991 | 20 | Shawnee Mission,Kansas | | UDFA | | |
| 15 | Janser Severino | P | A- | 6-2 | 140 | Right | Right | 9/16/1991 | 20 | La Romana,Dominican Republic | | UDFA | | |
| 27 | Creede Simpson | 2B | A | 6-2 | 180 | Right | Right | 9/8/1989 | 22 | Auburn,Alabama | 2012 | 25 | 762 | BAL |
| - | Tyler Townsend | 1B | AA | 6-3 | 215 | Left | Right | 5/14/1988 | 24 | Lewes,Delaware | 2009 | 3 | 85 | BAL |
| 11 | Sebastian Vader | P | A- | 6-4 | 175 | Right | Right | 6/3/1992 | 20 | San Marcos,California | 2010 | 18 | 538 | BAL |
| 31 | Anthony Vega | CF | A | 6-1 | 190 | Left | Right | 12/6/1990 | 21 | Patchogue,New York | 2012 | 30 | 912 | BAL |
| - | Joe Velleggia | 1B | A | 6-6 | 230 | Right | Right | 7/23/1988 | 23 | Monkton,Maryland | 2010 | 40 | 1198 | BAL |
| 45 | Hector Veloz | 3B | A- | 6-2 | 192 | Right | Right | 2/1/1994 | 18 | Santo Domingo,Dominican Republic | | UDFA | | |
| 38 | Brady Wager | P | A+ | 6-3 | 190 | Right | Right | 11/17/1990 | 21 | Globe,Arizona | 2012 | 9 | 282 | BAL |
| 29 | Christian Walker | 1B | A+ | 6-2 | 225 | Right | Right | 3/28/1991 | 21 | Limerick,Pennsylvania | 2012 | 4 | 132 | BAL |
| 15 | Dustin Ward | P | A- | 6-1 | 175 | Left | Left | 2/27/1990 | 22 | Little Rock,Arkansas | 2011 | 19 | 575 | BAL |
| 18 | Chase Weems | C | A+ | 6-2 | 170 | Left | Right | 1/17/1989 | 23 | Columbus,Georgia | 2007 | 6 | 214 | NYY |
| - | Ronnie Welty | RF | AA | 6-4 | 200 | Right | Right | 1/19/1988 | 24 | Seattle,Washington | 2008 | 20 | 596 | BAL |
| 23 | Bobby Wilkins | P | A+ | 6-4 | 225 | Right | Right | 8/20/1989 | 22 | San Diego,California | 2007 | 6 | 200 | TEX |
| 35 | Tommy Winegardner | 2B-P | A+ | 5-11 | 180 | Both | Right | 2/11/1990 | 22 | St. Leonards,Maryland | | UDFA | | |
| 36 | Ken Wise | P | A- | 6-6 | 225 | Right | Right | 4/7/1990 | 22 | Gainesville,Georgia | 2010 | 19 | 568 | BAL |