| Player | POS | Team | NUM | Height | Weight | DOB |
|---|---|---|---|---|---|---|
| Rafaela, Ceddanne | CF | BOS | 3 | 5'10" | 165 lbs | Sep 18, 2000 |
| Ragans, Cole | SP | KC | 55 | 6'4" | 190 lbs | Dec 12, 1997 |
| Raleigh, Cal | C | SEA | 29 | 6'2" | 235 lbs | Nov 26, 1996 |
| Raley, Brooks | RP | NYM | 25 | 6'3" | 200 lbs | Jun 29, 1988 |
| Raley, Luke | RF | SEA | 20 | 6'3" | 235 lbs | Sep 19, 1994 |
| Ramirez, Agustin | C | MIA | 50 | 6'1" | 210 lbs | Sep 10, 2001 |
| Ramirez, Jose | 3B | CLE | 11 | 5'8" | 190 lbs | Sep 17, 1992 |
| Ramirez, Yohan | RP | PIT | 49 | 6'3" | 205 lbs | May 6, 1995 |
| Ramos, Heliot | LF | SF | 17 | 5'11" | 235 lbs | Sep 7, 1999 |
| Rasmussen, Drew | SP | TB | 57 | 6'1" | 240 lbs | Jul 27, 1995 |
| Ray, Robbie | SP | SF | 38 | 6'2" | 220 lbs | Oct 1, 1991 |
| Rea, Colin | SP | CHC | 53 | 6'5" | 220 lbs | Jul 1, 1990 |
| Realmuto, J.T. | C | PHI | 10 | 6'0" | 212 lbs | Mar 18, 1991 |
| Refsnyder, Rob | RF | SEA | 30 | 5'11" | 215 lbs | Mar 26, 1991 |
| Rendon, Anthony | 3B | LAA | 6 | 6'1" | 200 lbs | Jun 6, 1990 |
| Rengifo, Luis | 3B | MIL | 13 | 5'9" | 204 lbs | Feb 26, 1997 |
| Reynolds, Bryan | RF | PIT | 10 | 6'2" | 210 lbs | Jan 27, 1995 |
| Ribalta, Orlando | RP | WAS | 64 | 6'7" | 245 lbs | Mar 5, 1998 |
| Rice, Ben | 1B | NYY | 22 | 6'2" | 228 lbs | Feb 22, 1999 |
| Riley, Austin | 3B | ATL | 27 | 6'1" | 225 lbs | Apr 2, 1997 |
| Rivas, Leo | 2B | SEA | 76 | 5'7" | 150 lbs | Oct 10, 1997 |
| Roa, Christian | RP | HOU | 73 | 6'4" | 220 lbs | Apr 2, 1999 |
| Robert Jr., Luis | CF | NYM | 88 | 6'2" | 225 lbs | Aug 3, 1997 |
| Roberts, Ethan | RP | CHC | 39 | 5'10" | 180 lbs | Jul 4, 1997 |
| Robles, Victor | RF | SEA | 10 | 6'0" | 193 lbs | May 19, 1997 |
| Rocchio, Brayan | SS | CLE | 4 | 5'9" | 170 lbs | Jan 13, 2001 |
| Rocker, Kumar | SP | TEX | 80 | 6'5" | 245 lbs | Nov 22, 1999 |
| Rodon, Carlos | SP | NYY | 55 | 6'2" | 255 lbs | Dec 10, 1992 |
| Rodriguez, Adrian | SS | AZ | 57 | 6'2" | 231 lbs | Apr 7, 1993 |
| Rodriguez, Bradgley | RP | SD | 72 | 6'1" | 160 lbs | Nov 16, 2003 |
| Rodriguez, Grayson | SP | LAA | 21 | 6'5" | 230 lbs | Nov 16, 1999 |
| Rodriguez, Johnathan | RF | BAL | 62 | 6'2" | 224 lbs | Nov 4, 1999 |
| Rodriguez, Julio | CF | SEA | 44 | 6'4" | 228 lbs | Dec 29, 2000 |
| Rodriguez, Manuel | RP | TB | 39 | 5'11" | 205 lbs | Aug 6, 1996 |
| Rodriguez, Randy | RP | SF | 73 | 6'0" | 195 lbs | Sep 5, 1999 |
| Rogers, Jake | C | DET | 34 | 5'11" | 201 lbs | Apr 18, 1995 |
| Rogers, Taylor | RP | MIN | 55 | 6'3" | 190 lbs | Dec 17, 1990 |
| Rogers, Trevor | SP | BAL | 28 | 6'5" | 217 lbs | Nov 13, 1997 |
| Rogers, Tyler | RP | TOR | 71 | 6'3" | 180 lbs | Dec 17, 1990 |
| Rojas, Miguel | 2B | LAD | 72 | 5'10" | 188 lbs | Feb 24, 1989 |
| Rolison, Ryan | RP | CHC | 33 | 6'2" | 213 lbs | Jul 11, 1997 |
| Romano, Jordan | RP | LAA | 68 | 6'5" | 210 lbs | Apr 21, 1993 |
| Romero, JoJo | RP | STL | 59 | 5'11" | 215 lbs | Sep 9, 1996 |
| Rooker, Brent | RF | ATH | 25 | 6'3" | 225 lbs | Nov 1, 1994 |
| Rosario, Amed | 3B | NYY | 14 | 6'1" | 190 lbs | Nov 20, 1995 |
| Roupp, Landen | SP | SF | 65 | 6'2" | 220 lbs | Sep 10, 1998 |
| Ruiz, Esteury | LF | MIA | 3 | 5'11" | 169 lbs | Feb 15, 1999 |
| Ruiz, Keibert | C | WAS | 20 | 5'11" | 238 lbs | Jul 20, 1998 |
| Rumfield, TJ | 1B | COL | 7 | 6'5" | 225 lbs | May 17, 2000 |
| Rushing, Dalton | C | LAD | 68 | 6'0" | 220 lbs | Feb 21, 2001 |
| Rutschman, Adley | C | BAL | 35 | 6'1" | 230 lbs | Feb 6, 1998 |
| Ryan, Joe | SP | MIN | 41 | 6'2" | 205 lbs | Jun 5, 1996 |






