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|
| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Machen, Michael | SP | San Mateo Dirty Reds | 31 | 03/19/2006 | Quincy | USA | Right | Right | 6' 0" | 215 lbs | $25,000,000 |
| Mae, Haechan | CF | Charleston Battery | 18 | 04/03/2019 | Sinpo | PRK | Right | Right | 6' 4" | 190 lbs | - |
| Mahl, Jeff | SP | Oakland Oaks | 28 | 07/26/2009 | Lower Burrell | USA | Right | Right | 6' 2" | 215 lbs | $2,390,000 |
| Mai, Feng-xiang | RP | Cleveland Browns | 17 | 08/12/2020 | Taichung | TPE | Left | Left | 6' 3" | 180 lbs | - |
| Maini, Pippino | SP | Houston 1837 BBC | 18 | 07/03/2019 | Rome | ITA | Right | Right | 6' 8" | 215 lbs | - |
| Maksimenov, Badry | 3B | Buckhead Bowties | 30 | 10/06/2007 | Jamesburg | USA | Left | Right | 6' 1" | 215 lbs | $280,000 |
| Maldonado, Daniel | RF | San Mateo Dirty Reds | 33 | 11/09/2004 | Santiago | DOM | Right | Right | 6' 3" | 190 lbs | $650,000 |
| Mancebo, Jesús | C | St. Louis Coeur | 18 | 06/09/2019 | Ocós | GUA | Right | Right | 5' 11" | 180 lbs | - |
| Marrero, Armando | SP | Thunder Bay Northern Lions BC | 32 | 04/15/2005 | Westfield | USA | Right | Right | 6' 0" | 200 lbs | $588,000 |
| Martin, Kylian | SP | Chicago Silver Sox | 17 | 03/25/2020 | Lunel | FRA | Right | Right | 6' 7" | 195 lbs | - |
| Martínez, Enrique | CF | Thunder Bay Northern Lions BC | 16 | 03/16/2021 | San Cristóbal Verapaz | GUA | Switch | Right | 6' 2" | 170 lbs | - |
| Martínez, Javier | SP | Chicago Silver Sox | 18 | 10/19/2019 | Ipís | CRC | Right | Right | 6' 4" | 180 lbs | - |
| Matena, Carsten | SP | Northern Virginia Rainbow Mermaids | 16 | 05/22/2021 | Paramaribo | SUR | Right | Right | 6' 3" | 175 lbs | - |
| Matsui, Junji | RF | Chicago Silver Sox | 17 | 01/12/2020 | Ebino | JPN | Left | Left | 6' 5" | 190 lbs | - |
| Mayfield, Baker | RP | D.C. Divided | 31 | 04/10/2006 | Warwick | USA | Right | Right | 6' 1" | 190 lbs | $6,000,000 |
| McCoy, Daniel | LF | Northern Virginia Rainbow Mermaids | 28 | 07/25/2009 | Bloomington | USA | Right | Right | 6' 5" | 225 lbs | $9,180,000 |
| McKee, Tom | SP | San Mateo Dirty Reds | 33 | 03/25/2004 | Glendale | USA | Right | Right | 6' 4" | 245 lbs | $750,000 |
| Medellín, Carlos | CF | Houston 1837 BBC | 30 | 10/14/2007 | Santo Domingo | DOM | Left | Left | 6' 2" | 195 lbs | $280,000 |
| Melichar, Krystof | SS | Houston 1837 BBC | 24 | 07/18/2013 | Vsetín | CZE | Right | Right | 5' 10" | 170 lbs | $280,000 |
| Mendoza, António | RF | San Mateo Dirty Reds | 32 | 02/11/2005 | Monte Cristi | DOM | Right | Right | 6' 1" | 200 lbs | $6,750,000 |
| Mendoza, Pancho | SP | Northern Virginia Rainbow Mermaids | 18 | 09/24/2019 | Santiago de Cuba | CUB | Left | Left | 6' 8" | 210 lbs | - |
| Mi, Yu-eh | CL | Nashville Outlaws | 29 | 12/12/2008 | Keelung | TPE | Left | Left | 6' 7" | 250 lbs | $10,970,000 |
| Miranda, Raúl | LF | Thunder Bay Northern Lions BC | 18 | 12/14/2019 | Caracas | VEN | Switch | Right | 6' 4" | 190 lbs | - |
| Miyanohara, Katsumoto | RP | Houston 1837 BBC | 28 | 10/10/2009 | Atsugi | JPN | Left | Left | 6' 0" | 175 lbs | $280,000 |
| Montoya, Gabriel | RF | Oakland Oaks | 23 | 09/24/2014 | San Juan | PUR | Left | Left | 6' 1" | 190 lbs | $280,000 |
| Moonglampers, Dino | RP | Houston 1837 BBC | 31 | 04/08/2006 | El Paso | USA | Right | Right | 6' 4" | 210 lbs | $500,000 |
| Mora, Rafael | RF | Northern Virginia Rainbow Mermaids | 18 | 08/29/2019 | San José | CRC | Left | Left | 6' 3" | 190 lbs | - |
| Morán, Juan | RP | Phoenix Hotspur | 29 | 05/03/2008 | Michigan City | USA | Right | Right | 6' 3" | 220 lbs | $420,000 |
| Morel, Franck | 1B | Houston 1837 BBC | 18 | 10/28/2019 | Guérande | FRA | Right | Right | 6' 2" | 210 lbs | - |
| Moreno, Juan | SP | San Mateo Dirty Reds | 24 | 12/05/2013 | Bayamón | PUR | Right | Right | 5' 11" | 195 lbs | $280,000 |
| Morterero, Pablo | C | Mississippi Mockingbirds | 17 | 09/16/2020 | Caracas | VEN | Right | Right | 6' 4" | 200 lbs | - |
| Mouton, Jeff | RF | Buckhead Bowties | 30 | 10/22/2007 | Brighton | USA | Right | Right | 6' 2" | 205 lbs | $280,000 |
| Mullaney, Chip | CF | D.C. Divided | 26 | 10/03/2011 | Indianapolis | USA | Right | Right | 6' 1" | 205 lbs | $420,000 |
| Mungus, Hugh | 3B | San Mateo Dirty Reds | 33 | 06/17/2004 | Camarillo | USA | Right | Right | 6' 4" | 245 lbs | $8,000,000 |
| Muñíz, Jesús | 3B | Cleveland Browns | 18 | 08/01/2019 | Mejicanos | SLV | Switch | Right | 6' 3" | 185 lbs | - |
| Muñóz, António | SP | Thunder Bay Northern Lions BC | 31 | 05/09/2006 | El Tocuyo | VEN | Left | Left | 6' 6" | 210 lbs | $5,500,000 |
| Muñóz, José | RP | Oakland Oaks | 32 | 02/16/2005 | Santo Domingo | DOM | Right | Right | 6' 6" | 210 lbs | $700,000 |
