| Player | POS | Team | NUM | Height | Weight | DOB |
|---|---|---|---|---|---|---|
| Machado, Manny | 3B | SD | 13 | 6'2" | 218 lbs | Jul 6, 1992 |
| MacIver, Willie | C | TEX | 47 | 6'2" | 205 lbs | Oct 28, 1996 |
| Mack, Joe | C | MIA | 80 | 6'0" | 210 lbs | Dec 27, 2002 |
| Macko, Adam | SP | TOR | 64 | 6'0" | 170 lbs | Dec 30, 2000 |
| Madden, Ty | SP | DET | 36 | 6'3" | 215 lbs | Feb 21, 2000 |
| Mahle, Tyler | SP | SF | 54 | 6'3" | 210 lbs | Sep 29, 1994 |
| Malloy, Justyn-Henry | RF | TB | 55 | 6'1" | 212 lbs | Feb 19, 2000 |
| Manaea, Sean | SP | NYM | 59 | 6'5" | 245 lbs | Feb 1, 1992 |
| Mangum, Jake | LF | PIT | 28 | 6'0" | 190 lbs | Mar 8, 1996 |
| Manoah, Alek | SP | LAA | 47 | 6'6" | 285 lbs | Jan 9, 1998 |
| Manzardo, Kyle | 1B | CLE | 9 | 6'0" | 205 lbs | Jul 18, 2000 |
| Marchan, Rafael | C | PHI | 13 | 5'9" | 170 lbs | Feb 25, 1999 |
| Marinaccio, Ron | RP | SD | 97 | 6'2" | 205 lbs | Jul 1, 1995 |
| Marquez, German | SP | SD | 33 | 6'1" | 230 lbs | Feb 22, 1995 |
| Marsee, Jakob | CF | MIA | 87 | 6'0" | 180 lbs | Jun 28, 2001 |
| Marsh, Alec | SP | KC | 48 | 6'2" | 220 lbs | May 14, 1998 |
| Marsh, Brandon | CF | PHI | 16 | 6'2" | 215 lbs | Dec 18, 1997 |
| Marte, Ketel | 2B | AZ | 4 | 6'0" | 210 lbs | Oct 12, 1993 |
| Marte, Noelvi | RF | CIN | 4 | 6'2" | 216 lbs | Oct 16, 2001 |
| Martin, Austin | CF | MIN | 16 | 5'11" | 185 lbs | Mar 23, 1999 |
| Martin, Chris | RP | TEX | 31 | 6'8" | 224 lbs | Jun 2, 1986 |
| Martin, Davis | SP | CHW | 65 | 6'2" | 215 lbs | Jan 4, 1997 |
| Martin, Riley | RP | CHC | 94 | 6'1" | 215 lbs | Mar 19, 1998 |
| Martinez, Justin | RP | AZ | 63 | 6'3" | 180 lbs | Jul 30, 2001 |
| Martinez, Nick | SP | TB | 28 | 6'1" | 200 lbs | Aug 5, 1990 |
| Martinez, Xavier | RP | CLE | 1 | 5'11" | 200 lbs | Jan 27, 2002 |
| Massey, Michael | 2B | KC | 19 | 6'0" | 195 lbs | Mar 22, 1998 |
| Mastrobuoni, Miles | 3B | SEA | 21 | 5'10" | 185 lbs | Oct 31, 1995 |
| Mateo, Jorge | SS | ATL | 2 | 6'1" | 200 lbs | Jun 23, 1995 |
| Maton, Phil | RP | CHC | 88 | 6'2" | 206 lbs | Mar 25, 1993 |
| Matos, Luis | RF | SF | 29 | 5'11" | 207 lbs | Jan 28, 2002 |
| Matsui, Yuki | RP | SD | 1 | 5'8" | 165 lbs | Oct 30, 1995 |
| Matthews, Brice | SS | HOU | 28 | 5'11" | 190 lbs | Mar 16, 2002 |
| Matthews, Zebby | SP | MIN | 52 | 6'5" | 225 lbs | May 22, 2000 |
| Mattson, Isaac | RP | PIT | 72 | 6'2" | 215 lbs | Jul 14, 1995 |
| Matz, Steven | RP | TB | 32 | 6'2" | 205 lbs | May 29, 1991 |
| Mauricio, Ronny | 3B | NYM | 0 | 6'4" | 166 lbs | Apr 4, 2001 |
| Mautz, Brycen | SP | STL | 52 | 6'3" | 190 lbs | Jul 17, 2001 |
| Maxwell, Zach | RP | CIN | 78 | 6'6" | 275 lbs | Jan 26, 2001 |
| May, Dustin | SP | STL | 3 | 6'6" | 180 lbs | Sep 6, 1997 |
| Mayer, Marcelo | 3B | BOS | 11 | 6'3" | 188 lbs | Dec 12, 2002 |
| Mayo, Coby | 1B | BAL | 16 | 6'4" | 230 lbs | Dec 10, 2001 |
| Mazur, Adam | SP | MIA | 60 | 6'2" | 180 lbs | Apr 20, 2001 |
| McArthur, James | RP | KC | 66 | 6'7" | 230 lbs | Dec 11, 1996 |
| McCambley, Zach | SP | PHI | 39 | 6'2" | 225 lbs | May 4, 1999 |
| McCann, James | C | AZ | 8 | 6'3" | 235 lbs | Jun 13, 1990 |
| McCarthy, Jake | CF | COL | 31 | 6'1" | 215 lbs | Jul 30, 1997 |
| McClanahan, Shane | SP | TB | 18 | 6'3" | 210 lbs | Apr 28, 1997 |
| McCoy, Mason | 2B | SD | 18 | 5'11" | 185 lbs | Mar 31, 1995 |
| McCray, Grant | CF | SF | 58 | 6'1" | 190 lbs | Dec 7, 2000 |
| McCullers Jr., Lance | SP | HOU | 43 | 6'1" | 200 lbs | Oct 2, 1993 |
| McDermott, Chayce | SP | BAL | 59 | 6'3" | 197 lbs | Aug 22, 1998 |
| McDonald, Trevor | SP | SF | 72 | 6'2" | 201 lbs | Feb 26, 2001 |
| McDougal, Tanner | SP | CHW | 68 | 6'5" | 185 lbs | Apr 9, 2003 |
| McFarlane, Alex | SP | PHI | 71 | 6'3" | 215 lbs | Jun 9, 2001 |
| McGarry, Griff | RP | WAS | 25 | 6'2" | 190 lbs | Jun 8, 1999 |
| McGee, Easton | SP | MIL | 50 | 6'7" | 217 lbs | Dec 26, 1997 |
| McGreevy, Michael | SP | STL | 36 | 6'4" | 220 lbs | Jul 8, 2000 |
| McKinstry, Zach | 3B | DET | 39 | 6'0" | 180 lbs | Apr 29, 1995 |
| McLain, Matt | 2B | CIN | 9 | 5'9" | 180 lbs | Aug 6, 1999 |
| McLean, Nolan | SP | NYM | 26 | 6'2" | 214 lbs | Jul 24, 2001 |
| McMahon, Ryan | 3B | NYY | 19 | 6'2" | 219 lbs | Dec 14, 1994 |
| McNeil, Jeff | 2B | ATH | 22 | 6'0" | 195 lbs | Apr 8, 1992 |
| Mead, Curtis | 1B | CHW | 17 | 6'1" | 225 lbs | Oct 26, 2000 |
| Meadows, Parker | CF | DET | 22 | 6'5" | 205 lbs | Nov 2, 1999 |
| Mears, Nick | RP | KC | 31 | 6'3" | 217 lbs | Oct 7, 1996 |
| Mederos, Victor | SP | LAA | 58 | 6'2" | 222 lbs | Jun 8, 2001 |
| Medina, Luis | SP | ATH | 46 | 6'1" | 175 lbs | May 3, 1999 |
| Megill, Trevor | RP | MIL | 29 | 6'8" | 249 lbs | Dec 5, 1993 |
| Megill, Tylor | SP | NYM | 58 | 6'7" | 230 lbs | Jul 28, 1995 |
| Meidroth, Chase | SS | CHW | 10 | 5'10" | 190 lbs | Jul 23, 2001 |
| Mejia, Juan | RP | COL | 47 | 6'3" | 200 lbs | Jul 4, 2000 |
| Melendez, MJ | LF | NYM | 1 | 6'1" | 190 lbs | Nov 29, 1998 |
| Melton, Jacob | LF | TB | 29 | 6'3" | 208 lbs | Sep 7, 2000 |
| Melton, Troy | SP | DET | 52 | 6'4" | 210 lbs | Dec 3, 2000 |
| Mena, Cristian | SP | AZ | 64 | 6'2" | 170 lbs | Dec 21, 2002 |
| Mendez, Hendry | LF | MIN | 64 | 6'3" | 175 lbs | Nov 7, 2003 |
| Mendez, Miguel | RP | SD | 62 | 6'2" | 165 lbs | Jul 1, 2002 |
| Merrill, Jackson | CF | SD | 3 | 6'3" | 195 lbs | Apr 19, 2003 |
| Mesa Jr., Victor | CF | TB | 25 | 5'11" | 195 lbs | Sep 8, 2001 |
| Messick, Parker | SP | CLE | 77 | 6'0" | 225 lbs | Oct 26, 2000 |
| Mey, Luis | RP | CIN | 47 | 6'5" | 235 lbs | Jun 24, 2001 |
| Meyer, Max | SP | MIA | 23 | 6'0" | 196 lbs | Mar 12, 1999 |
| Meyers, Jake | CF | HOU | 6 | 6'0" | 200 lbs | Jun 18, 1996 |
| Mikolas, Miles | SP | WAS | 36 | 6'4" | 230 lbs | Aug 23, 1988 |
| Miles, Spencer | SP | TOR | 62 | 6'3" | 180 lbs | Jul 26, 2000 |
| Millas, Drew | C | WAS | 14 | 6'1" | 204 lbs | Jan 15, 1998 |
| Miller, Bobby | SP | LAD | 28 | 6'5" | 220 lbs | Apr 5, 1999 |
| Miller, Bryce | SP | SEA | 50 | 6'2" | 200 lbs | Aug 23, 1998 |
| Miller, Erik | RP | SF | 68 | 6'5" | 268 lbs | Feb 13, 1998 |
| Miller, Jake | RP | DET | 60 | 6'2" | 185 lbs | Jan 1, 0001 |
| Miller, Mason | RP | SD | 22 | 6'5" | 200 lbs | Aug 24, 1998 |
| Miller, Shelby | RP | CHC | 77 | 6'3" | 225 lbs | Oct 10, 1990 |
| Milner, Hoby | RP | CHC | 41 | 6'3" | 187 lbs | Jan 13, 1991 |
| Minter, A.J. | RP | NYM | 33 | 6'0" | 215 lbs | Sep 2, 1993 |
| Misiorowski, Jacob | SP | MIL | 32 | 6'7" | 197 lbs | Apr 3, 2002 |
| Misner, Kameron | CF | KC | 26 | 6'4" | 220 lbs | Jan 9, 1998 |
| Mitchell, Garrett | CF | MIL | 5 | 6'2" | 228 lbs | Sep 4, 1998 |
| Mize, Casey | SP | DET | 12 | 6'3" | 212 lbs | May 1, 1997 |
| Mlodzinski, Carmen | RP | PIT | 50 | 6'2" | 220 lbs | Feb 19, 1999 |
| Moll, Sam | RP | CIN | 50 | 5'9" | 190 lbs | Jan 3, 1992 |
| Monasterio, Andruw | SS | BOS | 32 | 5'11" | 195 lbs | May 30, 1997 |
| Moncada, Yoan | 3B | LAA | 10 | 6'0" | 220 lbs | May 27, 1995 |
| Moniak, Mickey | RF | COL | 22 | 6'2" | 195 lbs | May 13, 1998 |
| Montero, Keider | SP | DET | 54 | 6'1" | 145 lbs | Jul 6, 2000 |
| Montgomery, Braden | RF | CHW | 12 | 6'3" | 230 lbs | Feb 27, 2002 |
| Montgomery, Jordan | SP | TEX | 52 | 6'6" | 228 lbs | Dec 27, 1992 |
| Montgomery, Mason | RP | PIT | 46 | 6'2" | 205 lbs | Jun 17, 2000 |
| Moore, Christian | 2B | LAA | 4 | 6'0" | 210 lbs | Oct 21, 2002 |
| Morabito, Nick | CF | NYM | 70 | 5'10" | 185 lbs | May 7, 2003 |
| Morales, Luis | SP | ATH | 19 | 6'3" | 200 lbs | Sep 24, 2002 |
| Moran, Jovani | RP | BOS | 47 | 6'1" | 167 lbs | Apr 24, 1997 |
| Morejon, Adrian | RP | SD | 50 | 5'11" | 224 lbs | Feb 27, 1999 |
| Morel, Christopher | LF | MIA | 5 | 6'0" | 200 lbs | Jun 24, 1999 |
| Moreno, Gabriel | C | AZ | 14 | 5'9" | 195 lbs | Feb 14, 2000 |
| Morgan, David | RP | SD | 66 | 6'0" | 185 lbs | Oct 26, 1999 |
| Morillo, Juan | RP | AZ | 67 | 6'1" | 150 lbs | Mar 19, 1999 |
| Mountcastle, Ryan | 1B | BAL | 6 | 6'3" | 220 lbs | Feb 18, 1997 |
| Mullins, Cedric | CF | TB | 31 | 5'8" | 175 lbs | Oct 1, 1994 |
| Muncy, Max | 3B | LAD | 13 | 5'10" | 215 lbs | Aug 25, 1990 |
| Muncy, Max | 3B | ATH | 3 | 6'1" | 180 lbs | Aug 25, 2002 |
| Munoz, Andres | RP | SEA | 75 | 6'2" | 222 lbs | Jan 16, 1999 |
| Munoz, Roddery | RP | HOU | 46 | 6'2" | 210 lbs | Apr 14, 2000 |
| Munoz, Rolddy | SP | ATL | 67 | 6'2" | 183 lbs | Apr 14, 2000 |
| Murakami, Munetaka | 3B | CHW | 5 | 6'2" | 213 lbs | Feb 2, 2000 |
| Murphy, Chris | RP | CHW | 38 | 6'1" | 186 lbs | Jun 5, 1998 |
| Murphy, Sean | C | ATL | 12 | 6'3" | 228 lbs | Oct 4, 1994 |
| Murray, Jayden | SP | HOU | 70 | 6'1" | 190 lbs | Apr 11, 1997 |
| Murray, Tanner | 2B | CHW | 41 | 6'1" | 190 lbs | Sep 3, 1999 |
| Musgrove, Joe | SP | SD | 44 | 6'5" | 230 lbs | Dec 4, 1992 |
| Myers, Dane | CF | CIN | 17 | 6'0" | 205 lbs | Mar 8, 1996 |
| Myers, Tobias | SP | NYM | 32 | 6'1" | 223 lbs | Aug 5, 1998 |






