Players: last names starting with M
418 players, with the number of cards for each.
- Djean Macares 6
- Tommy Mace 2
- Estiven Machado 5
- Mannny Machado 1
- Manny Machado 752
- Roilan Machandy 1
- Josh Maciejewski 10
- Willie MacIver 4
- Connie Mack 9
- Joe Mack 29
- David MacKinnon 5
- Adam Macko 1
- Lee MacPhail 1
- Ty Madden 22
- Greg Maddux 314
- Jesús Made 85
- Kevin Made 2
- Bill Madlock 4
- Truitt Madonna 3
- Nick Madrigal 29
- Bligh Madris 14
- Kenta Maeda 33
- Dave Magadan 1
- Drew Maggi 8
- Sal Maglie 1
- Tyler Mahle 14
- Jack Mahoney 3
- Luke Maile 3
- Aidan Major 3
- Shugo Maki 3
- Taisei Makihara 2
- Anthony Maldonado 11
- Cameron Maldonado 4
- Martín Maldonado 18
- Justyn-Henry Malloy 61
- Sean Manaea 37
- Trey Mancini 46
- Jake Mangum 22
- Matt Manning 38
- Alek Manoah 94
- Joe Mantiply 5
- Mickey Mantle 132
- Heinie Manush 2
- Kyle Manzardo 115
- Landon Marceaux 2
- Jorge Marcheco 1
- Moises Marchán 5
- Rafael Marchán 6
- Manuel Margot 16
- Naibel Mariano 7
- Juan Marichal 38
- Madison Marilla 2
- Stiven Marinez 9
- Marty Marion 4
- Roger Maris 60
- Caroline Marks 2
- Cade Marlowe 25
- Landen Maroudis 1
- Rube Marquard 6
- Anyelo Marquez 4
- Brailyn Marquez 2
- Jakob Marsee 88
- Alec Marsh 20
- Brandon Marsh 71
- Ketel Marte 235
- Noelvi Marte 249
- Sabier Marte 1
- Starling Marte 108
- Curley Martha 6
- Austin Martin 62
- Billy Martin 3
- Chris Martin 3
- Davis Martin 18
- Riley Martin 2
- Trevor Martin 9
- Walker Martin 6
- Anthony Martinez 1
- Edgar Martinez 120
- Gabriel Martinez 2
- J.D. Martinez 82
- J.P. Martinez 17
- Jeter Martinez 2
- Justin Martinez 18
- Keyner Martinez 3
- Nick Martinez 20
- Orelvis Martinez 73
- Orlando Martinez 1
- Pedro Martinez 241
- Stiven Martinez 4
- Victor Martinez 11
- Nick Martini 9
- Mairoshendrick Martinus 1
- Nathan Martorella 3
- Angel Martínez 68
- Julio Pablo Martínez 4
- Kendry Martínez 7
- Kyle Maslan 2
- Michael Massey 43
- Miles Mastrobuoni 21
- Jorge Mateo 28
- Eddie Mathews 49
- Quinn Mathews 12
- Christy Mathewson 28
- Mark Mathias 2
- Cole Mathis 11
- Carter Mathison 8
- Seuly Matias 2
- Richard Matic 5
- JJ Matijevic 2
- Nick Maton 1
- Luis Matos 108
- Hideki Matsui 123
- Yuki Matsui 53
- Yuki Matsumoto 2
- Brice Matthews 70
- Gary Matthews 1
- Zebby Matthews 47
- Don Mattingly 203
- Steven Matz 11
- Tyler Matzek 1
- Joe Mauer 96
- Ronny Mauricio 173
- Brycen Mautz 6
- Zach Maxwell 14
- Zachary Maxwell 2
- Aiden May 4
- Dusin May 1
- Dustin May 20
- Trevor May 2
- John Mayberry 3
- Brando Mayea 20
- Marcelo Mayer 228
- Kash Mayfield 16
- Shad Mayfield 6
- Coby Mayo 235
- Willie Mays 237
- Tim Mayza 3
- Bill Mazeroski 24
- Adam Mazur 27
- Charles McAdoo 7
- James McArthur 13
- David McCabe 8
- Brian McCann 3
- James McCann 12
- Kyle McCann 19
- Jordan McCants 2
- Jake McCarthy 48
- Joe McCarthy 4
- Tim McCarver 2
- Matt McClain 1
- Shane McClanahan 117
- Mason McConnaughey 3
- Chas McCormick 41
- Willie McCovey 60
- Mason McCoy 7
- Grant McCray 41
- Lance McCullers 2
- Carson McCusker 5
- Andrew McCutchen 328
- Quinn McDaniel 3
- Garrett McDaniels 5
- Chayce McDermott 19
- Trevor McDonald 8
- Tyler McDonough 2
- Tanner McDougal 1
- Gil McDougald 4
- Daniel McElveny 1
- Alex McFarlane 5
- Griff McGarry 4
- Willie McGee 2
- Kevin McGonigle 204
- Teddy McGraw 1
- Tug McGraw 1
- Michael McGreevy 43
- Fred McGriff 107
- Reese McGuire 11
- Shane McGuire 1
- Mark McGwire 348
- Mason McGwire 2
- Collin McHugh 3
- Ryan McKenna 11
- Briggs McKenzie 7
- Jared McKenzie 7
- Triston McKenzie 52
- Zach McKinstry 16
- Matt McLain 114
- Nick McLain 9
- Sean McLain 9
- Nolan McLean 149
- Ryan McMahon 46
- John McMillon 12
- Jeff McNeil 87
- Curtis Mead 194
- Austin Meadows 24
- Parker Meadows 68
- John Means 8
- Bryce Meccage 8
- Wade Meckler 38
- Victor Mederos 17
- Adonis Medina 3
- Elias Medina 2
- Luis Medina 9
- Ramcell Medina 5
- Raymer Medina 5
- Joe Medwick 5
- James Meeker 2
- Johnny Vander Meer 1
- Trevor Megill 11
- Tylor Megill 16
- Chase Meidroth 49
- Esteban Mejia 13
- Jonathan Mejia 13
- Juan Mejia 4
- Francisco Mejía 9
- Dakota Mekkes 1
- Mark Melancon 2
- Ezequiel Melbourne 10
- Gustavo Melendez 4
- Ivan Melendez 14
- MJ Melendez 78
- Yahil Melendez 5
- Jacob Melton 79
- Troy Melton 35
- Cristian Mena 17
- Hendry Mendez 18
- Miguel Mendez 4
- Danny Mendick 4
- Joey Meneses 61
- Michael Mercado 8
- Oscar Mercado 1
- Yasser Mercedes 12
- Luis Merejo 5
- Enmanuel Merlo 11
- Whit Merrifield 59
- Jackson Merrill 471
- Matt Mervis 43
- Victor Mesia 1
- Parker Messick 47
- Cole Messina 8
- New York Mets 13
- Luis Mey 4
- Max Meyer 88
- Noble Meyer 15
- Jake Meyers 18
- Luis Meza 9
- Brandol Mezquita 1
- JB Middleton 7
- Yaikel Mijares 1
- Miles Mikolas 22
- Karson Milbrandt 4
- Spencer Miles 2
- Wade Miley 6
- Cameron Millar 5
- Andrew Millas 1
- Drew Millas 18
- Aidan Miller 77
- Bobby Miller 69
- Brad Miller 3
- Bryce Miller 53
- Cody Miller 6
- Cole Miller 1
- Erik Miller 10
- Gage Miller 8
- Jacob Miller 9
- Janero Miller 1
- Mason Miller 130
- Noah Miller 1
- Owen Miller 13
- Ryan Miller 3
- Hoby Milner 5
- Camden Minacci 3
- Braylin Minier 4
- Minnie Minoso 7
- A.J. Minter 9
- Jose Miranda 45
- Nestor Miranda 4
- Jacob Misiorowski 210
- Kameron Misner 13
- Blake Mitchell 41
- Cal Mitchell 32
- Dale Mitchell 1
- Garrett Mitchell 107
- Jase Mitchell 4
- Nick Mitchell 7
- Ryan Mitchell 7
- Matthew Miura 4
- Hiroya Miyagi 2
- The Miz 2
- Casey Mize 35
- Johnny Mize 32
- Carmen Mlodzinski 16
- Chase Mobley 5
- Javier Mogollon 5
- Alexander Mojica 1
- Anthony Molina 10
- Yadier Molina 169
- Paul Molitor 138
- Sam Moll 3
- Andruw Monasterio 16
- Yoán Moncada 46
- Rick Monday 1
- Adalberto Mondesi 5
- Yordanny Monegro 1
- Ricky Moneys 11
- Mickey Moniak 27
- Nick Monistere 3
- Green Monster 2
- Frankie Montas 18
- Willie Montañez 1
- John Montefusco 3
- Edgar Montero 7
- Elehuris Montero 14
- Fidel Montero 4
- Hans Montero 1
- Keider Montero 23
- Rafael Montero 1
- Coco Montes 22
- Lazaro Montes 31
- Daniel Montesino 2
- Patrick Monteverde 4
- Benny Montgomery 38
- Braden Montgomery 47
- Colson Montgomery 266
- Jordan Montgomery 27
- Mason Montgomery 10
- Nick Montgomery 7
- Franyerber Montilla 6
- Bernard Moon 4
- Seojun Moon 6
- Wally Moon 1
- Alex Mooney 5
- Christian Moore 175
- Dylan Moore 15
- Malcolm Moore 13
- Matt Moore 7
- McKinley Moore 3
- Robert Moore 4
- Nick Morabito 3
- Emil Morales 21
- Luis Morales 43
- Michael Morales 2
- Yohandy Morales 18
- Colin Moran 3
- Jovani Moran 1
- Aneudis Mordán 1
- Adrian Morejon 3
- Braylin Morel 13
- Christoper Morel 7
- Christopher Morel 275
- Darell Morel 4
- Gabriel Moreno 228
- David Morgan 4
- Eli Morgan 8
- Joe Morgan 58
- Tre' Morgan 17
- Shotaro Morii 38
- Jirvin Morillo 2
- Juan Morillo 4
- Shota Morishita 2
- Cody Morissette 2
- PJ Morlando 25
- Justin Morneau 50
- Andrew Morris 8
- Cody Morris 4
- Jack Morris 6
- Kade Morris 5
- Mason Morris 6
- Jacob Morrison 6
- Felix Morrobel 6
- Yeison Morrobel 14
- Charlie Morton 19
- Diego Mosquera 3
- Dean Moss 6
- Les Moss 1
- Don Mossi 1
- Taylor Motter 2
- Ryan Mountcastle 200
- Justin Mourneau 1
- Mike Moustakas 11
- Frank Mozzicato 2
- Zach Muckenhirn 1
- Zander Mueth 4
- Mark Mulder 20
- Nazier Mule 5
- Kyle Muller 10
- Cedric Mullins 152
- Mark Multer 1
- Max Muncy 234
- Samuel Munoz 14
- Jake Munroe 4
- Thumon Munson 1
- Thurman Munson 51
- Thurmon Munson 2
- Masanori Murakami 15
- Munetaka Murakami 200
- Bobby Murcer 7
- Noah Murdock 4
- Chris Murphy 15
- Dale Murphy 149
- Owen Murphy 9
- Sean Murphy 84
- Tom Murphy 5
- Eddie Murray 216
- Jayden Murray 2
- Tanner Murray 2
- Bobblehead Museum 2
- Joe Musgrove 102
- Stan Musial 110
- Mike Mussina 17
- Simon Muzziotti 5
- Andrés Muñoz 16
- Roddery Muñoz 12
- Rolddy Muñoz 14
- Yadier Muñoz 8
- Dane Myers 30
- Tobias Myers 20
- Wil Myers 15
- Germán Márquez 18