| Pitching | G | GS | CG | IP | H | R | ER | HR | SH | SF | HP | BB | K | IB | W | L | Pct | Sv | ERA | |
| Maddux,Greg | 22 | 22 | 2 | 154.1 | 185 | 91 | 72 | 17 | 11 | 2 | 1 | 30 | 91 | 6 | 7 | - | 12 | 0.368 | 0 | 4.20 |
| Mahaffey,Roy | 2 | 0 | 0 | 3.1 | 9 | 8 | 8 | 0 | 0 | 0 | 0 | 3 | 4 | 0 | 0 | - | 1 | 0.000 | 0 | 21.60 |
| Mahomes,Pat | 3 | 0 | 0 | 5.0 | 2 | 5 | 3 | 1 | 1 | 0 | 0 | 3 | 3 | 0 | 0 | - | 0 | 0.000 | 0 | 5.40 |
| Maine,John | 7 | 7 | 1 | 44.0 | 41 | 22 | 14 | 3 | 4 | 0 | 0 | 29 | 45 | 12 | 2 | - | 2 | 0.500 | 0 | 2.86 |
| Marichal,Juan | 25 | 25 | 14 | 205.2 | 164 | 68 | 64 | 22 | 11 | 6 | 1 | 48 | 99 | 9 | 14 | - | 10 | 0.583 | 0 | 2.80 |
| Maroth,Mike* | 3 | 2 | 0 | 16.2 | 18 | 9 | 8 | 2 | 0 | 1 | 0 | 5 | 4 | 0 | 1 | - | 1 | 0.500 | 0 | 4.32 |
| Marshall,Mike | 7 | 0 | 0 | 6.2 | 9 | 6 | 6 | 4 | 0 | 0 | 1 | 2 | 2 | 0 | 0 | - | 1 | 0.000 | 0 | 8.10 |
| Martin,Fred | 5 | 1 | 0 | 14.1 | 12 | 5 | 5 | 3 | 1 | 0 | 0 | 1 | 16 | 0 | 1 | - | 2 | 0.333 | 0 | 3.14 |
| Martin,Renie | 3 | 2 | 1 | 15.0 | 12 | 11 | 10 | 3 | 0 | 0 | 0 | 9 | 8 | 0 | 2 | - | 1 | 0.667 | 0 | 6.00 |
| Martinez,Dennis | 15 | 15 | 1 | 98.0 | 104 | 49 | 41 | 8 | 9 | 8 | 4 | 34 | 43 | 3 | 6 | - | 5 | 0.545 | 0 | 3.77 |
| Martinez,Pedro | 30 | 28 | 5 | 186.1 | 155 | 89 | 86 | 17 | 13 | 6 | 12 | 71 | 203 | 7 | 11 | - | 11 | 0.500 | 0 | 4.15 |
| Martinez,Ramon | 1 | 1 | 0 | 6.0 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 0 | - | 1 | 0.000 | 0 | 1.50 |
| Mason,Mike* | 2 | 0 | 0 | 1.2 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | - | 0 | 0.000 | 0 | 5.40 |
| Mason,Roger | 2 | 0 | 0 | 1.1 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| Matthews,Mike* | 8 | 0 | 0 | 6.1 | 9 | 1 | 1 | 0 | 0 | 0 | 1 | 2 | 3 | 1 | 0 | - | 0 | 0.000 | 0 | 1.42 |
| McBride,Ken | 4 | 0 | 0 | 11.0 | 16 | 17 | 17 | 2 | 0 | 0 | 0 | 10 | 6 | 0 | 0 | - | 0 | 0.000 | 0 | 13.91 |
| McCall,Larry | 1 | 0 | 0 | 2.1 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| McCaskill,Kirk | 8 | 0 | 0 | 12.0 | 11 | 6 | 4 | 1 | 0 | 0 | 0 | 6 | 13 | 0 | 0 | - | 1 | 0.000 | 1 | 3.00 |
| McCatty,Steve | 6 | 6 | 3 | 49.0 | 50 | 27 | 26 | 6 | 5 | 2 | 1 | 19 | 24 | 1 | 1 | - | 5 | 0.167 | 0 | 4.78 |
| McClure,Bob* | 20 | 8 | 2 | 57.0 | 66 | 39 | 38 | 8 | 6 | 2 | 2 | 36 | 34 | 4 | 3 | - | 5 | 0.375 | 1 | 6.00 |
| McCormick,Mike* | 4 | 4 | 1 | 29.2 | 25 | 5 | 5 | 0 | 1 | 1 | 0 | 8 | 13 | 0 | 4 | - | 0 | 1.000 | 0 | 1.52 |
| McCullers,Lance | 5 | 0 | 0 | 5.1 | 4 | 1 | 1 | 0 | 0 | 0 | 1 | 3 | 5 | 0 | 0 | - | 0 | 0.000 | 0 | 1.69 |
| McDaniel,Lindy | 13 | 0 | 0 | 13.1 | 16 | 7 | 7 | 0 | 1 | 0 | 0 | 3 | 9 | 0 | 1 | - | 0 | 1.000 | 1 | 4.73 |
| McDevitt,Danny* | 1 | 0 | 0 | 1.2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| McDowell,Jack | 17 | 17 | 7 | 122.2 | 127 | 64 | 55 | 10 | 2 | 1 | 2 | 39 | 83 | 2 | 7 | - | 7 | 0.500 | 0 | 4.04 |
| McDowell,Roger | 40 | 0 | 0 | 49.2 | 52 | 32 | 30 | 6 | 6 | 0 | 0 | 19 | 30 | 7 | 4 | - | 5 | 0.444 | 7 | 5.44 |
| McEnaney,Will* | 5 | 0 | 0 | 3.0 | 6 | 5 | 5 | 1 | 0 | 0 | 0 | 2 | 1 | 0 | 2 | - | 0 | 1.000 | 0 | 15.00 |
| McEwing,Joe | 1 | 0 | 0 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | - | 0 | 0.000 | 0 | 9.00 |
| McGlothlin,Jim | 9 | 9 | 2 | 66.0 | 52 | 17 | 11 | 2 | 3 | 2 | 1 | 23 | 25 | 0 | 4 | - | 2 | 0.667 | 0 | 1.50 |
| McGraw,Tug* | 38 | 0 | 0 | 25.1 | 24 | 9 | 9 | 3 | 1 | 1 | 0 | 6 | 13 | 2 | 2 | - | 0 | 1.000 | 5 | 3.20 |
| McKee,Jim | 2 | 0 | 0 | 2.0 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | - | 0 | 0.000 | 0 | 4.50 |
| McLain,Denny | 16 | 16 | 8 | 119.2 | 115 | 56 | 52 | 18 | 13 | 3 | 0 | 31 | 75 | 1 | 6 | - | 6 | 0.500 | 0 | 3.91 |
| McMahon,Don | 15 | 0 | 0 | 16.0 | 16 | 8 | 5 | 1 | 0 | 0 | 0 | 6 | 16 | 0 | 1 | - | 2 | 0.333 | 5 | 2.81 |
| McMichael,Greg | 8 | 0 | 0 | 6.2 | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 3 | 4 | 1 | 2 | - | 1 | 0.667 | 1 | 1.35 |
| McNally,Dave* | 23 | 23 | 11 | 175.0 | 144 | 53 | 50 | 15 | 12 | 4 | 2 | 54 | 81 | 2 | 13 | - | 7 | 0.650 | 0 | 2.57 |
| McQueen,Mike* | 2 | 0 | 0 | 2.1 | 7 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 1 | 0.000 | 0 | 15.43 |
| Meadows,Lee | 9 | 9 | 7 | 73.0 | 80 | 47 | 45 | 7 | 4 | 4 | 4 | 27 | 40 | 0 | 4 | - | 3 | 0.571 | 0 | 5.55 |
| Medich,Doc | 6 | 2 | 0 | 16.2 | 31 | 25 | 21 | 1 | 1 | 0 | 0 | 9 | 10 | 0 | 0 | - | 2 | 0.000 | 0 | 11.34 |
| Mendoza,Ramiro | 13 | 1 | 0 | 23.1 | 39 | 26 | 22 | 5 | 0 | 1 | 1 | 4 | 12 | 0 | 0 | - | 1 | 0.000 | 1 | 8.49 |
| Mercker,Kent* | 15 | 0 | 0 | 11.0 | 10 | 6 | 6 | 0 | 2 | 2 | 1 | 10 | 7 | 1 | 0 | - | 2 | 0.000 | 1 | 4.91 |
| Meredith,Cla | 10 | 0 | 0 | 11.1 | 16 | 7 | 7 | 2 | 1 | 1 | 2 | 0 | 8 | 0 | 1 | - | 1 | 0.500 | 0 | 5.56 |
| Merritt,Jim* | 17 | 17 | 7 | 125.0 | 139 | 72 | 64 | 16 | 10 | 3 | 0 | 26 | 77 | 0 | 4 | - | 10 | 0.286 | 0 | 4.61 |
| Mesa,Jose | 27 | 0 | 0 | 21.0 | 28 | 14 | 9 | 2 | 2 | 1 | 2 | 9 | 15 | 2 | 2 | - | 3 | 0.400 | 9 | 3.86 |
| Meyer,Bob* | 1 | 0 | 0 | 2.0 | 4 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| Miceli,Dan | 14 | 0 | 0 | 17.2 | 14 | 7 | 5 | 1 | 0 | 0 | 0 | 6 | 11 | 0 | 0 | - | 1 | 0.000 | 0 | 2.55 |
| Mikkelsen,Pete | 10 | 0 | 0 | 13.1 | 10 | 9 | 9 | 0 | 4 | 1 | 0 | 10 | 6 | 1 | 1 | - | 2 | 0.333 | 0 | 6.08 |
| Militello,Sam | 1 | 1 | 0 | 3.2 | 8 | 5 | 5 | 1 | 0 | 1 | 1 | 3 | 2 | 0 | 0 | - | 1 | 0.000 | 0 | 12.27 |
| Miljus,Johnny | 7 | 1 | 0 | 23.0 | 25 | 16 | 15 | 1 | 0 | 2 | 0 | 13 | 16 | 0 | 2 | - | 2 | 0.500 | 1 | 5.87 |
| Miller,Andrew* | 2 | 1 | 0 | 11.1 | 10 | 3 | 1 | 0 | 0 | 1 | 0 | 2 | 10 | 0 | 1 | - | 0 | 1.000 | 0 | 0.79 |
| Miller,Bob | 21 | 0 | 0 | 27.2 | 28 | 8 | 8 | 2 | 0 | 2 | 0 | 11 | 13 | 1 | 0 | - | 3 | 0.000 | 1 | 2.60 |
| Miller,John | 3 | 3 | 0 | 17.1 | 15 | 7 | 7 | 0 | 3 | 0 | 0 | 13 | 12 | 1 | 1 | - | 2 | 0.333 | 0 | 3.63 |
| Miller,Stu | 16 | 0 | 0 | 18.0 | 16 | 13 | 11 | 2 | 2 | 1 | 0 | 7 | 9 | 0 | 0 | - | 2 | 0.000 | 6 | 5.50 |
| Miner,Zach | 13 | 0 | 0 | 34.0 | 31 | 16 | 16 | 1 | 4 | 3 | 0 | 15 | 14 | 0 | 2 | - | 1 | 0.667 | 0 | 4.24 |
| Minetto,Craig* | 1 | 0 | 0 | 1.0 | 7 | 7 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 63.00 |
| Mingori,Steve* | 8 | 0 | 0 | 6.0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 1 | - | 0 | 1.000 | 2 | 0.00 |
| Mitchell,John | 3 | 0 | 0 | 2.1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| Moeller,Joe | 8 | 7 | 0 | 47.2 | 37 | 21 | 18 | 6 | 3 | 1 | 1 | 19 | 17 | 1 | 5 | - | 2 | 0.714 | 0 | 3.40 |
| Monteleone,Rich | 7 | 0 | 0 | 7.1 | 10 | 8 | 8 | 4 | 0 | 1 | 0 | 2 | 5 | 0 | 0 | - | 1 | 0.000 | 0 | 9.82 |
| Moore,Donnie | 1 | 0 | 0 | 2.1 | 5 | 3 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 7.71 |
| Moore,Mike | 4 | 4 | 0 | 21.1 | 32 | 17 | 16 | 2 | 0 | 0 | 0 | 9 | 6 | 0 | 1 | - | 2 | 0.333 | 0 | 6.75 |
| Moore,Ray | 13 | 0 | 0 | 18.0 | 20 | 11 | 11 | 1 | 1 | 1 | 0 | 13 | 11 | 0 | 0 | - | 0 | 0.000 | 1 | 5.50 |
| Moose,Bob | 17 | 8 | 1 | 61.2 | 80 | 40 | 40 | 4 | 2 | 1 | 2 | 16 | 41 | 3 | 2 | - | 3 | 0.400 | 0 | 5.84 |
| Morehead,Dave | 1 | 1 | 0 | 5.2 | 2 | 3 | 3 | 0 | 0 | 0 | 0 | 6 | 2 | 0 | 0 | - | 0 | 0.000 | 0 | 4.76 |
| Moreno,Angel | 2 | 1 | 0 | 9.0 | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 4 | 3 | 0 | 1 | - | 0 | 1.000 | 0 | 1.00 |
| Morlan,John | 3 | 0 | 0 | 3.2 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 1 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| Morris,Jack | 9 | 9 | 7 | 74.1 | 71 | 37 | 37 | 13 | 6 | 0 | 0 | 31 | 41 | 0 | 4 | - | 5 | 0.444 | 0 | 4.48 |
| Morris,Matt | 8 | 8 | 0 | 55.0 | 60 | 31 | 25 | 5 | 9 | 1 | 4 | 17 | 42 | 0 | 2 | - | 4 | 0.333 | 0 | 4.09 |
| Morrison,Johnny | 2 | 0 | 0 | 2.2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| Moseley,Dustin | 1 | 0 | 0 | 3.2 | 8 | 4 | 4 | 0 | 0 | 1 | 0 | 3 | 1 | 0 | 0 | - | 0 | 0.000 | 0 | 9.82 |
| Mossi,Don* | 12 | 1 | 0 | 23.0 | 20 | 9 | 8 | 4 | 0 | 1 | 0 | 6 | 15 | 0 | 0 | - | 2 | 0.000 | 1 | 3.13 |
| Mota,Guillermo | 5 | 0 | 0 | 4.0 | 4 | 2 | 2 | 0 | 1 | 0 | 0 | 3 | 3 | 0 | 0 | - | 0 | 0.000 | 0 | 4.50 |
| Mueller,Willie | 2 | 0 | 0 | 1.2 | 8 | 7 | 7 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 37.80 |
| Mulholland,Terry* | 19 | 10 | 2 | 83.2 | 84 | 46 | 38 | 8 | 3 | 3 | 2 | 20 | 46 | 1 | 2 | - | 7 | 0.222 | 1 | 4.09 |
| Muncrief,Bob | 7 | 2 | 0 | 17.2 | 11 | 8 | 8 | 2 | 1 | 0 | 0 | 11 | 6 | 0 | 0 | - | 0 | 0.000 | 0 | 4.08 |
| Munger,Red | 6 | 6 | 3 | 48.0 | 45 | 16 | 16 | 5 | 4 | 1 | 0 | 17 | 27 | 4 | 3 | - | 2 | 0.600 | 0 | 3.00 |
| Munoz,Bobby | 2 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | - | 0 | 0.000 | 0 | 0.00 |
| Musselman,Ron | 4 | 0 | 0 | 7.1 | 7 | 6 | 6 | 0 | 0 | 0 | 0 | 3 | 2 | 0 | 0 | - | 0 | 0.000 | 1 | 7.36 |
| Mussina,Mike | 17 | 17 | 4 | 122.0 | 126 | 64 | 60 | 16 | 5 | 1 | 2 | 30 | 83 | 1 | 9 | - | 6 | 0.600 | 0 | 4.43 |
| Myers,Randy* | 30 | 0 | 0 | 23.0 | 38 | 23 | 22 | 6 | 2 | 4 | 0 | 16 | 15 | 4 | 1 | - | 6 | 0.143 | 7 | 8.61 |