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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MacDonald, Harold | SP | Free Agent | 24 | 01/16/2019 | Rosemont | USA | Right | Right | 6' 1" | 180 lbs | - |
| Machehin, Leonid | LF | Baltimore Bullets | 24 | 02/09/2019 | Salsk | RUS | Left | Left | 6' 1" | 195 lbs | $280,000 |
| Macías, Ángelo | RP | Free Agent | 23 | 03/23/2020 | San Antonio | USA | Right | Right | 6' 4" | 215 lbs | - |
| Macías, António | 3B | Greenville 84s | 24 | 02/22/2019 | San Nicolas | CRC | Right | Right | 6' 1" | 195 lbs | $9,902,500 |
| MacKichan, Eric | RF | Free Agent | 23 | 07/10/2020 | Shreveport | USA | Left | Right | 6' 2" | 210 lbs | - |
| MacNamara, Paul | C | Free Agent | 25 | 03/14/2018 | San Clemente | USA | Switch | Right | 6' 2" | 210 lbs | - |
| MacRury, Steve | 2B | Free Agent | 18 | 12/10/2025 | New York | USA | Right | Right | 5' 10" | 165 lbs | - |
| Maire, Sylvain | SP | New Orleans Voodoo | 17 | 10/06/2026 | Nérac | FRA | Left | Left | 6' 3" | 180 lbs | - |
| Mais, John A. | SP | Ft. Worth Cattlemen | 32 | 04/02/2011 | Koblenz | GER | Right | Right | 6' 5" | 235 lbs | $11,500,000 |
| Maitho, Gelana | SP | Free Agent | 18 | 07/11/2025 | Banning | USA | Left | Right | 5' 10" | 165 lbs | - |
| Maldonado, Shawn | 3B | Free Agent | 18 | 01/31/2025 | Pawtucket | USA | Right | Right | 6' 1" | 175 lbs | - |
| Malone, Stan | SP | Free Agent | 18 | 11/30/2025 | Ramtown | USA | Left | Right | 6' 0" | 180 lbs | - |
| Maneilli, Gian-Carlo | SP | Hollywood Shredders | 20 | 10/14/2023 | Caracas | VEN | Switch | Right | 6' 6" | 195 lbs | - |
| Manley, Mike | RF | Free Agent | 18 | 12/30/2025 | Hempstead | USA | Left | Left | 5' 11" | 175 lbs | - |
| Mann, Hugh | CF | Free Agent | 18 | 06/13/2025 | Columbus | USA | Right | Right | 6' 0" | 170 lbs | - |
| Manuel, Júlio | SP | Free Agent | 24 | 07/02/2019 | San Juan | PUR | Right | Right | 6' 0" | 200 lbs | - |
| Manzanares, Tony | C | Charleston Battery | 34 | 02/18/2009 | Santo Domingo | DOM | Switch | Right | 6' 6" | 245 lbs | $1,500,000 |
| Manzanedo, Ignacio | SP | Greenville 84s | 25 | 12/17/2018 | Santa Cruz | ARG | Right | Right | 6' 1" | 180 lbs | $280,000 |
| Marín, Fernando | RP | Free Agent | 18 | 02/01/2025 | Seminole Manor | USA | Switch | Left | 6' 0" | 180 lbs | - |
| Marino, Carlos | CF | Mississippi Mockingbirds | 18 | 08/05/2025 | Tipitapa | NCA | Right | Right | 5' 10" | 170 lbs | - |
| Marks, Curt | SS | Free Agent | 18 | 06/14/2025 | Guttenberg | USA | Right | Right | 6' 0" | 170 lbs | - |
| Márquez, Manuel | 2B | Northern Virginia Rainbow Mermaids | 26 | 02/04/2017 | Havana | CUB | Right | Right | 6' 1" | 195 lbs | $280,000 |
| Márquez, Rafael | C | Free Agent | 24 | 02/12/2019 | Wrightsville | USA | Right | Right | 6' 5" | 230 lbs | - |
| Marrero, Pedro | C | St. Louis Coeur | 25 | 04/30/2018 | Vilafranca del Penedès | ESP | Left | Right | 6' 0" | 215 lbs | $280,000 |
| Marshall, Cullen | SS | Free Agent | 17 | 04/17/2026 | Nashville | USA | Right | Right | 6' 0" | 160 lbs | - |
| Martí, Juan Andrés | 3B | Boston Patriots | 24 | 08/03/2019 | Santiago | DOM | Left | Right | 6' 0" | 180 lbs | $9,840,000 |
| Martin, Clayton | SP | Free Agent | 23 | 03/16/2020 | Sugar Land | USA | Right | Right | 5' 9" | 170 lbs | - |
| Martin, Dave | SP | Free Agent | 18 | 04/13/2025 | Minneapolis | USA | Right | Right | 6' 3" | 215 lbs | - |
| Martin, Lucas | SP | Free Agent | 22 | 12/06/2021 | Manassas | USA | Left | Left | 6' 1" | 190 lbs | - |
| Martínez, Chano | SP | Mississippi Mockingbirds | 19 | 06/08/2024 | Padre las Casas | DOM | Right | Right | 6' 1" | 175 lbs | - |
| Martínez, Eduardo | SP | Free Agent | 19 | 12/16/2024 | Selden | USA | Left | Left | 6' 2" | 190 lbs | - |
| Martínez, Gabriel | SS | Hollywood Shredders | 16 | 09/29/2027 | Curridabat | CRC | Right | Right | 6' 4" | 185 lbs | - |
| Martínez, Júlio | C | Free Agent | 20 | 12/30/2023 | Northborough | USA | Right | Right | 6' 0" | 185 lbs | - |
| Martínez, León | CF | Free Agent | 22 | 08/25/2021 | Mobile | USA | Right | Right | 5' 10" | 170 lbs | - |
| Martínez, Luis | 1B | Free Agent | 18 | 06/08/2025 | San Diego | USA | Right | Right | 6' 2" | 205 lbs | - |
| Martínez, Miguel Angel | RP | Charleston Battery | 33 | 07/17/2010 | Santo Domingo | DOM | Right | Right | 6' 2" | 200 lbs | $4,500,000 |
| Martinez, Pascal | SP | Free Agent | 21 | 09/22/2022 | Penetanguishene | CAN | Right | Right | 5' 10" | 175 lbs | - |
| Martínez, Pedro | 2B | Free Agent | 23 | 06/24/2020 | San German | PUR | Right | Right | 6' 4" | 215 lbs | - |
| Martínez, Rafael | CF | Free Agent | 18 | 03/09/2025 | San Juan | PUR | Switch | Right | 6' 0" | 170 lbs | - |
| Martínez, Rafael | RF | St. Louis Coeur | 24 | 05/16/2019 | San Josecito | CRC | Left | Left | 6' 1" | 195 lbs | $280,000 |
| Martínez, Tomás | RP | Free Agent | 21 | 06/30/2022 | Gastonia | USA | Switch | Right | 5' 9" | 165 lbs | - |
| Maskell, Rhys | RP | Boston Patriots | 31 | 01/18/2012 | Anna's Retreat | VIR | Right | Right | 6' 2" | 220 lbs | $7,500,000 |
| Mason, Eric | RP | Hollywood Shredders | 25 | 12/14/2018 | Bakersfield | USA | Right | Right | 6' 3" | 205 lbs | $280,000 |
| Mason, Ken | LF | Free Agent | 18 | 03/16/2025 | Wright | USA | Left | Right | 6' 2" | 190 lbs | - |
| Massey, Charles | RP | Free Agent | 27 | 11/29/2016 | New York | USA | Switch | Right | 5' 11" | 195 lbs | - |
| Massey, Jeff | SP | Free Agent | 20 | 03/24/2023 | Brooklyn | USA | Right | Right | 5' 9" | 150 lbs | - |
| Mathis, Kevin | SS | Free Agent | 20 | 04/09/2023 | Buffalo | USA | Right | Right | 5' 10" | 170 lbs | - |
| Matsumoto, Tetsu | 1B | Baltimore Bullets | 27 | 11/04/2016 | Tokyo | JPN | Switch | Right | 6' 1" | 205 lbs | $8,500,000 |
| Matthews, Roland | RF | Free Agent | 18 | 03/07/2025 | Grand Rapids | USA | Left | Left | 6' 3" | 195 lbs | - |
| May, Derek | RP | Greenville 84s | 26 | 08/31/2017 | Woodstock | USA | Left | Right | 5' 10" | 185 lbs | $280,000 |
| McAllister, David | LF | Free Agent | 18 | 06/07/2025 | New York | USA | Left | Right | 6' 4" | 215 lbs | - |
| McBride, Bake | CF | Free Agent | 18 | 08/30/2025 | Plant City | USA | Right | Right | 6' 0" | 170 lbs | - |
| McCall, Marvin | SP | Free Agent | 17 | 01/14/2026 | Opelousas | USA | Switch | Right | 6' 4" | 190 lbs | - |
| McCandles, Markus | SP | Free Agent | 18 | 11/11/2025 | Los Angeles | USA | Right | Right | 6' 4" | 195 lbs | - |
| McClure, Ambrose | SP | Free Agent | 21 | 09/26/2022 | San Antonio | USA | Right | Right | 6' 1" | 190 lbs | - |
| McConnell, Elroy | SP | Free Agent | 18 | 05/26/2025 | Woodbury | USA | Right | Left | 6' 2" | 185 lbs | - |
| McCooke, Todd | SS | Free Agent | 17 | 02/14/2026 | Gardere | USA | Right | Right | 6' 1" | 170 lbs | - |
| McCord, Edmond | RP | Long Island Lighthouse | 32 | 11/26/2011 | Hammond | USA | Right | Right | 6' 0" | 220 lbs | $700,000 |
| McCord, Richard | SP | Free Agent | 18 | 03/17/2025 | Newport News | USA | Switch | Left | 6' 7" | 215 lbs | - |
| McDonald, Jeff | 2B | Free Agent | 17 | 08/08/2026 | Cleveland | USA | Right | Right | 5' 10" | 165 lbs | - |
| McFillin, Bobby | C | Free Agent | 32 | 05/11/2011 | Shreveport | USA | Right | Right | 6' 1" | 250 lbs | - |
| McGhee, Will | RP | Free Agent | 26 | 12/22/2017 | Minturn | USA | Left | Right | 6' 0" | 200 lbs | - |
| McKee, Dusty | SP | Free Agent | 18 | 03/03/2025 | Long View | USA | Left | Left | 6' 4" | 190 lbs | - |
| McKnight, Ray | CF | Free Agent | 20 | 01/07/2023 | Long Beach | USA | Right | Right | 6' 0" | 190 lbs | - |
| McLaughlin, Donatas | CF | Free Agent | 18 | 02/04/2025 | Valdosta | USA | Switch | Right | 6' 1" | 180 lbs | - |
| McNeal, Dave | SP | Free Agent | 18 | 10/20/2025 | Kearney | USA | Right | Right | 6' 2" | 185 lbs | - |
| McNeil, Nelson | SP | Free Agent | 19 | 02/22/2024 | North Atlanta | USA | Right | Right | 6' 2" | 190 lbs | - |
| McSweeny, Lee | CF | Free Agent | 22 | 04/09/2021 | Albertville | USA | Right | Right | 6' 0" | 180 lbs | - |
| Meacklin, Neal | RP | Free Agent | 22 | 08/14/2021 | Pembroke | USA | Right | Right | 6' 7" | 230 lbs | - |
| Meadows, Wilton | CF | Free Agent | 17 | 02/16/2026 | San Francisco | USA | Left | Left | 5' 10" | 160 lbs | - |
| Meekin, Matt | C | Free Agent | 25 | 02/03/2018 | Tanque Verde | USA | Right | Right | 6' 5" | 235 lbs | - |
| Mejía, Xavier | 1B | Free Agent | 23 | 08/08/2020 | Bayamón | PUR | Left | Left | 6' 5" | 235 lbs | - |
| Meléndez, Fernando | SP | Free Agent | 21 | 11/11/2022 | Philadelphia | USA | Left | Left | 6' 2" | 185 lbs | - |
| Men, Joy-shan | RP | Boston Patriots | 32 | 11/14/2011 | Shaoxing | CHN | Right | Right | 6' 2" | 215 lbs | $20,000,000 |
| Méndez, Mario | SP | Buffalo White Walkers | 17 | 03/12/2026 | San Miguel | SLV | Right | Right | 6' 2" | 180 lbs | - |
| Méndez, Ricardo | SP | Free Agent | 17 | 01/29/2026 | Los Angeles | USA | Right | Right | 6' 2" | 175 lbs | - |
| Meng, Chut-sai | 2B | Boston Patriots | 24 | 11/19/2019 | Daipo | HKG | Right | Right | 6' 0" | 175 lbs | $280,000 |
| Mercado, José | SP | Northern Virginia Rainbow Mermaids | 17 | 12/28/2026 | Santo Domingo | DOM | Left | Left | 6' 6" | 195 lbs | - |
| Merritt, Kenny | RP | Free Agent | 26 | 07/01/2017 | Gloucester City | USA | Left | Left | 6' 4" | 200 lbs | - |
| Metcalf, Phil | CF | Free Agent | 23 | 12/20/2020 | Tinley Park | USA | Switch | Left | 6' 2" | 205 lbs | - |
| Meurs, Leo | SP | Baltimore Bullets | 17 | 02/14/2026 | Princess Quarter | SIM | Right | Right | 6' 3" | 180 lbs | - |
| Michielsen, Hildebrand | SP | Charleston Battery | 29 | 07/27/2014 | Princess Quarter | SIM | Left | Left | 6' 5" | 210 lbs | $600,000 |
| Middleton, Walt | SP | Free Agent | 17 | 03/26/2026 | Tulsa | USA | Right | Left | 6' 2" | 175 lbs | - |
| Miller, Brit | C | Free Agent | 24 | 08/31/2019 | Bend | USA | Left | Right | 6' 0" | 210 lbs | - |
| Miller, Clayton | C | Free Agent | 18 | 01/01/2025 | New York | USA | Right | Right | 5' 9" | 180 lbs | - |
| Miller, Jamie | SP | Free Agent | 20 | 06/28/2023 | Maple Shade Township | USA | Switch | Right | 6' 2" | 200 lbs | - |
| Miller, Jason | SP | Boston Patriots | 25 | 02/25/2018 | Lawton | USA | Switch | Right | 5' 9" | 185 lbs | $280,000 |
| Miller, Lee | C | Free Agent | 18 | 07/05/2025 | Aurora | USA | Right | Right | 6' 0" | 180 lbs | - |
| Miller, Matt | LF | Free Agent | 18 | 03/27/2025 | Beckett | USA | Right | Right | 6' 6" | 215 lbs | - |
| Miller, Ron | C | Free Agent | 18 | 01/03/2025 | Bakersfield | USA | Right | Right | 6' 0" | 190 lbs | - |
| Milliken, David | 2B | Baltimore Bullets | 28 | 10/22/2015 | Cody | USA | Right | Right | 6' 2" | 225 lbs | $280,000 |
| Mills, Justin | LF | Free Agent | 20 | 06/26/2023 | Dearborn | USA | Right | Right | 6' 4" | 220 lbs | - |
| Miranda, Raúl | C | Free Agent | 18 | 08/10/2025 | Macon | USA | Right | Right | 6' 0" | 185 lbs | - |
| Mireles, Javier | 3B | Baltimore Bullets | 17 | 10/11/2026 | Comitan | MEX | Right | Right | 6' 4" | 200 lbs | - |
| Modlin, Tony | SP | Free Agent | 21 | 09/08/2022 | Garfield | USA | Right | Right | 6' 1" | 195 lbs | - |
| Mogollón, Esteban | RF | Boston Patriots | 17 | 02/04/2026 | Caracas | VEN | Switch | Right | 5' 11" | 155 lbs | - |
| Monachino, Ramiro | SS | Buffalo White Walkers | 18 | 01/28/2025 | Carrizal | VEN | Right | Right | 6' 4" | 195 lbs | - |
| Monnet, Alain | SP | Cleveland Browns | 18 | 07/05/2025 | Bonchamp-lès-Laval | FRA | Right | Right | 6' 2" | 175 lbs | - |
| Montáñez, Félix | SP | Free Agent | 18 | 09/12/2025 | Bremerton | USA | Right | Right | 6' 4" | 195 lbs | - |
| Montero, Luis | C | Free Agent | 21 | 09/18/2022 | Lincoln Park | USA | Right | Right | 6' 4" | 225 lbs | - |
| Montoya, Pablo | SP | Free Agent | 21 | 05/17/2022 | Guaynabo | PUR | Right | Right | 6' 4" | 210 lbs | - |
| Moon, Stan | 3B | Free Agent | 18 | 12/08/2025 | Detroit | USA | Right | Right | 6' 4" | 200 lbs | - |
| Moonfall, Colton | SP | St. Louis Coeur | 24 | 01/08/2019 | Killeen | USA | Right | Right | 6' 1" | 190 lbs | $280,000 |
| Moore, David | SP | St. Louis Coeur | 33 | 04/22/2010 | Irvine | USA | Switch | Right | 6' 4" | 215 lbs | $9,000,000 |
| Moore, Jason | SP | Free Agent | 20 | 12/11/2023 | Carpinteria | USA | Switch | Right | 6' 1" | 190 lbs | - |
| Morales, Fernando | 1B | Baltimore Bullets | 16 | 02/07/2027 | Santo Domingo | DOM | Left | Left | 6' 2" | 210 lbs | - |
| Morales, Manuel | SP | Buffalo White Walkers | 17 | 02/25/2026 | Soyapango | SLV | Right | Right | 6' 1" | 170 lbs | - |
| Morales, Pablo | SP | Hollywood Shredders | 17 | 07/12/2026 | Paya | DOM | Right | Right | 6' 5" | 190 lbs | - |
| Morán, Mateo | C | Baltimore Bullets | 17 | 02/25/2026 | Pinar del Rio | CUB | Right | Right | 5' 10" | 165 lbs | - |
| Moran, Rocky | RF | Boston Patriots | 24 | 01/01/2019 | Austin | USA | Right | Right | 6' 3" | 190 lbs | $280,000 |
| Moreno, Armando | SP | Boston Patriots | 18 | 10/03/2025 | San José | CRC | Right | Right | 6' 2" | 185 lbs | - |
| Moreno, Cristián | SP | Baltimore Bullets | 32 | 10/27/2011 | Granadilla | CRC | Right | Right | 6' 0" | 220 lbs | $1,400,000 |
| Moreno, Héctor | CF | Free Agent | 18 | 04/07/2025 | Chesterfield Township | USA | Right | Right | 6' 1" | 185 lbs | - |
| Moreno, Luis | SP | Long Island Lighthouse | 16 | 02/11/2027 | Jarabacoa | DOM | Left | Left | 6' 6" | 195 lbs | - |
| Morgan, Paul | CF | Free Agent | 21 | 05/04/2022 | El Paso | USA | Right | Right | 6' 0" | 185 lbs | - |
| Morgan, Roy | RP | Free Agent | 26 | 10/15/2017 | Tallmadge | USA | Right | Right | 5' 10" | 200 lbs | - |
| Morris, Mike | SP | Free Agent | 20 | 01/11/2023 | Suisun City | USA | Right | Right | 6' 0" | 185 lbs | - |
| Morris, Sal | SP | Free Agent | 23 | 11/25/2020 | Ft. Worth | USA | Left | Left | 6' 2" | 200 lbs | - |
| Morrison, Jasper | RF | Boston Patriots | 33 | 03/30/2010 | High Point | USA | Switch | Right | 6' 3" | 215 lbs | $2,000,000 |
| Morrison, Scott | RP | Charleston Battery | 31 | 04/17/2012 | Lofthouse-Stanley | ENG | Left | Right | 6' 0" | 205 lbs | $6,500,000 |
| Morrow, Phil | 1B | Free Agent | 23 | 09/01/2020 | Charlotte | USA | Right | Right | 6' 2" | 225 lbs | - |
| Morse, Ethan | RP | Free Agent | 18 | 04/03/2025 | Somerset | USA | Right | Right | 6' 2" | 190 lbs | - |
| Mortimore, Lenny | C | Greenville 84s | 17 | 12/31/2026 | Kingston | JAM | Right | Right | 6' 2" | 195 lbs | - |
| Mosley, Lonnie | RP | Free Agent | 26 | 09/19/2017 | Milwaukee | USA | Switch | Right | 5' 10" | 175 lbs | - |
| Mosley, Todd | SP | Free Agent | 17 | 09/04/2026 | Columbus | USA | Left | Left | 6' 6" | 205 lbs | - |
| Mota, Sergio | RP | Free Agent | 26 | 09/19/2017 | Nampa | USA | Left | Left | 6' 1" | 200 lbs | - |
| Mota, Víctor | C | Free Agent | 27 | 06/13/2016 | Tlalnepantla | MEX | Switch | Right | 6' 1" | 225 lbs | - |
| Muldoon, Paul | RP | Free Agent | 29 | 12/17/2014 | The Village | USA | Right | Right | 6' 3" | 220 lbs | - |
| Murakami, Nobuhisa | 1B | St. Louis Coeur | 35 | 12/14/2008 | Okayama | JPN | Right | Right | 6' 0" | 195 lbs | $14,000,000 |
| Murillo, Miguel | SP | Free Agent | 18 | 08/11/2025 | Arlington | USA | Right | Right | 5' 9" | 165 lbs | - |
| Murphy, Spike | C | Free Agent | 22 | 05/14/2021 | Kansas City | USA | Right | Right | 6' 4" | 225 lbs | - |
| Myers, Paul | CF | Free Agent | 18 | 09/07/2025 | Central Islip | USA | Left | Right | 6' 0" | 175 lbs | - |
