| East | W | L | Pct | GB |
| NY Yankees | 114 | 48 | .704 | -- |
| Boston | 92 | 70 | .568 | 22.0 |
| Toronto | 88 | 74 | .543 | 26.0 |
| Baltimore | 79 | 83 | .488 | 35.0 |
| Tampa Bay | 63 | 99 | .389 | 51.0 |
| Date | Pitcher | Hand | Age | Game Result | Opp | GS# | Career | Dec | IP | H | R | ER | HR | BB | SO | Pit | Bal | Str | Str% | W-L | ERA | WHIP |
| 1998-04-01 | Pedro Martinez | R | 26 | W 2-0 | @ OAK | 1 | 121 | W | 7.0 | 3 | 0 | 0 | 0 | 2 | 11 | 0 | 0 | 0 | -- | 1-0 | 0.00 | 0.71 |
| 1998-04-02 | Tim Wakefield | R | 32 | W 6-3 | @ OAK | 1 | 122 | - | 5.2 | 6 | 3 | 3 | 0 | 1 | 3 | 0 | 0 | 0 | -- | 0-0 | 4.50 | 1.17 |
| 1998-04-03 | Derek Lowe | R | 25 | L 6-11 | @ SEA | 1 | 10 | L | 4.0 | 7 | 7 | 4 | 1 | 4 | 1 | 0 | 0 | 0 | -- | 0-1 | 9.00 | 2.75 |
| 1998-04-04 | Brian Rose | R | 22 | L 6-12 | @ SEA | 1 | 2 | L | 2.0 | 6 | 6 | 6 | 2 | 1 | 1 | 0 | 0 | 0 | -- | 0-1 | 27.00 | 3.50 |
| 1998-04-05 | Bret Saberhagen | R | 34 | W 10-5 | @ SEA | 1 | 316 | W | 5.0 | 4 | 2 | 2 | 0 | 4 | 4 | 0 | 0 | 0 | -- | 1-0 | 3.60 | 1.60 |
| 1998-04-06 | Pedro Martinez | R | 26 | L 1-2 | @ ANA | 2 | 122 | - | 7.0 | 7 | 1 | 1 | 0 | 3 | 9 | 108 | 40 | 68 | 63% | 1-0 | 0.64 | 1.07 |
| 1998-04-07 | Tim Wakefield | R | 32 | L 1-6 | @ ANA | 2 | 123 | L | 7.1 | 8 | 6 | 6 | 2 | 1 | 6 | 99 | 28 | 71 | 72% | 0-1 | 7.88 | 1.44 |
| 1998-04-08 | Derek Lowe | R | 25 | L 1-2 | @ ANA | 2 | 11 | L | 6.0 | 4 | 2 | 2 | 0 | 2 | 4 | 69 | 26 | 43 | 62% | 0-2 | 5.40 | 1.70 |
| 1998-04-10 | Brian Rose | R | 22 | L 9-7 | vs SEA | 2 | 3 | - | 5.1 | 5 | 3 | 2 | 0 | 2 | 3 | 0 | 0 | 0 | -- | 0-1 | 10.29 | 2.00 |
| 1998-04-11 | Pedro Martinez | R | 26 | L 5-0 | vs SEA | 3 | 123 | W | 9.0 | 2 | 0 | 0 | 0 | 2 | 12 | 0 | 0 | 0 | -- | 2-0 | 0.39 | 0.83 |
| 1998-04-12 | Tim Wakefield | R | 32 | L 8-7 | vs SEA | 3 | 124 | - | 6.2 | 8 | 4 | 4 | 2 | 2 | 6 | 111 | 38 | 73 | 66% | 0-1 | 7.04 | 1.43 |
| 1998-04-13 | Bret Saberhagen | R | 34 | L 6-3 | vs OAK | 2 | 317 | W | 6.0 | 2 | 2 | 2 | 1 | 2 | 6 | 97 | 40 | 57 | 59% | 2-0 | 3.27 | 1.09 |
| 1998-04-14 | Butch Henry | L | 30 | L 8-6 | vs OAK | 1 | 86 | - | 5.0 | 4 | 2 | 2 | 1 | 2 | 5 | 93 | 36 | 57 | 61% | 0-0 | 3.60 | 1.20 |
| 1998-04-15 | Brian Rose | R | 22 | L 4-3 | vs OAK | 3 | 4 | - | 5.0 | 4 | 2 | 2 | 0 | 5 | 2 | 101 | 44 | 57 | 56% | 0-1 | 7.50 | 1.92 |
| 1998-04-17 | Pedro Martinez | R | 26 | L 3-2 | vs CLE | 4 | 124 | - | 9.0 | 4 | 2 | 2 | 1 | 0 | 12 | 110 | 35 | 75 | 68% | 2-0 | 0.84 | 0.72 |
| 1998-04-18 | Tim Wakefield | R | 32 | W 4-7 | vs CLE | 4 | 125 | - | 7.1 | 6 | 3 | 2 | 0 | 1 | 6 | 0 | 0 | 0 | -- | 0-1 | 6.00 | 1.33 |
| 1998-04-19 | Bret Saberhagen | R | 34 | L 2-0 | vs CLE | 3 | 318 | W | 6.0 | 4 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | -- | 3-0 | 2.12 | 1.00 |
| 1998-04-20 | Butch Henry | L | 30 | L 6-5 | vs CLE | 2 | 87 | - | 4.0 | 4 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | -- | 0-0 | 4.00 | 1.22 |
| 1998-04-21 | Brian Rose | R | 22 | W 11-4 | @ DET | 4 | 5 | W | 7.0 | 4 | 2 | 2 | 2 | 0 | 3 | 0 | 0 | 0 | -- | 1-1 | 5.68 | 1.42 |
| 1998-04-22 | Pedro Martinez | R | 26 | W 8-5 | @ DET | 5 | 125 | - | 5.1 | 6 | 4 | 4 | 1 | 3 | 7 | 98 | 37 | 61 | 62% | 2-0 | 1.70 | 0.86 |
| 1998-04-24 | Tim Wakefield | R | 32 | W 7-5 | @ CLE | 5 | 126 | W | 6.0 | 7 | 4 | 4 | 1 | 0 | 3 | 85 | 28 | 57 | 67% | 1-1 | 6.00 | 1.31 |
| 1998-04-25 | Bret Saberhagen | R | 34 | W 3-2 | @ CLE | 4 | 319 | W | 6.0 | 3 | 1 | 1 | 1 | 3 | 4 | 100 | 43 | 57 | 57% | 4-0 | 1.96 | 1.00 |
| 1998-04-27 | Brian Rose | R | 22 | L 6-5 | vs DET | 5 | 6 | - | 4.1 | 7 | 4 | 3 | 0 | 3 | 4 | 84 | 35 | 49 | 58% | 1-1 | 5.63 | 1.54 |
| 1998-04-28 | Pedro Martinez | R | 27 | W 5-7 | vs DET | 6 | 126 | - | 6.0 | 9 | 4 | 4 | 1 | 2 | 6 | 108 | 41 | 67 | 62% | 2-0 | 2.30 | 1.00 |
| 1998-04-29 | Tim Wakefield | R | 32 | L 8-4 | vs ANA | 6 | 127 | W | 6.1 | 7 | 3 | 2 | 1 | 2 | 2 | 82 | 21 | 61 | 74% | 2-1 | 5.57 | 1.33 |
| 1998-04-30 | Robinson Checo | R | 27 | W 2-7 | vs ANA | 1 | 3 | L | 5.1 | 6 | 4 | 4 | 2 | 3 | 3 | 81 | 34 | 47 | 58% | 0-1 | 7.20 | 1.80 |
| 1998-05-01 | Bret Saberhagen | R | 34 | L 5-3 | vs TEX | 5 | 320 | - | 3.0 | 4 | 3 | 3 | 0 | 1 | 1 | 68 | 28 | 40 | 59% | 4-0 | 2.77 | 1.08 |
| 1998-05-02 | Brian Rose | R | 22 | W 6-7 | vs TEX | 6 | 7 | L | 6.0 | 7 | 5 | 5 | 2 | 1 | 3 | 84 | 23 | 61 | 73% | 1-2 | 6.00 | 1.50 |
| 1998-05-03 | Pedro Martinez | R | 27 | L 2-1 | vs TEX | 7 | 127 | W | 7.0 | 5 | 1 | 0 | 0 | 2 | 9 | 0 | 0 | 0 | -- | 3-0 | 1.98 | 1.00 |
| 1998-05-05 | Tim Wakefield | R | 32 | L 4-2 | vs MIN | 7 | 128 | W | 7.1 | 5 | 2 | 2 | 0 | 2 | 5 | 100 | 31 | 69 | 69% | 3-1 | 5.04 | 1.26 |
| 1998-05-06 | Robinson Checo | R | 27 | W 7-8 | vs MIN | 2 | 4 | L | 2.1 | 5 | 4 | 4 | 1 | 2 | 2 | 52 | 22 | 30 | 58% | 0-2 | 9.00 | 2.00 |
| 1998-05-07 | Brian Rose | R | 22 | L 3-5 | @ KCA | 7 | 8 | L | 6.0 | 5 | 4 | 3 | 2 | 1 | 1 | 86 | 28 | 58 | 67% | 1-3 | 5.75 | 1.42 |
| 1998-05-08 | Bret Saberhagen | R | 34 | W 14-3 | @ KCA | 6 | 321 | W | 6.0 | 7 | 3 | 3 | 0 | 0 | 3 | 78 | 23 | 55 | 71% | 5-0 | 3.09 | 1.09 |
| 1998-05-09 | Pedro Martinez | R | 27 | W 3-1 | @ KCA | 8 | 128 | W | 7.0 | 4 | 1 | 1 | 0 | 3 | 6 | 111 | 41 | 70 | 63% | 4-0 | 1.89 | 1.00 |
| 1998-05-10 | Tim Wakefield | R | 32 | W 3-1 | @ KCA | 8 | 129 | W | 8.2 | 2 | 1 | 0 | 0 | 1 | 5 | 93 | 29 | 64 | 69% | 4-1 | 4.34 | 1.14 |
| 1998-05-11 | John Wasdin | R | 26 | L 2-8 | @ TEX | 1 | 31 | L | 3.0 | 7 | 6 | 6 | 3 | 1 | 2 | 71 | 30 | 41 | 58% | 3-1 | 6.16 | 1.47 |
| 1998-05-12 | Brian Rose | R | 22 | L 3-6 | @ TEX | 8 | 9 | L | 2.0 | 5 | 6 | 6 | 1 | 1 | 1 | 53 | 21 | 32 | 60% | 1-4 | 6.87 | 1.50 |
| 1998-05-13 | Bret Saberhagen | R | 34 | L 4-7 | @ MIN | 7 | 322 | L | 3.0 | 8 | 6 | 6 | 2 | 2 | 0 | 65 | 28 | 37 | 57% | 5-1 | 4.37 | 1.29 |
| 1998-05-14 | Pedro Martinez | R | 27 | L 1-2 | @ MIN | 9 | 129 | - | 8.0 | 6 | 1 | 1 | 0 | 1 | 11 | 127 | 40 | 87 | 69% | 4-0 | 1.80 | 0.98 |
| 1998-05-15 | Tim Wakefield | R | 32 | L 5-2 | vs KCA | 9 | 130 | W | 7.0 | 7 | 2 | 2 | 0 | 1 | 6 | 85 | 22 | 63 | 74% | 5-1 | 4.15 | 1.14 |
| 1998-05-16 | Steve Avery | L | 28 | L 5-0 | vs KCA | 1 | 220 | W | 5.0 | 3 | 0 | 0 | 0 | 2 | 1 | 81 | 33 | 48 | 59% | 1-0 | 4.50 | 1.30 |
| 1998-05-17 | Derek Lowe | R | 25 | L 5-3 | vs KCA | 3 | 12 | - | 5.0 | 5 | 2 | 1 | 0 | 1 | 3 | 78 | 24 | 54 | 69% | 0-2 | 2.31 | 1.13 |
| 1998-05-19 | Bret Saberhagen | R | 34 | W 5-9 | vs CHA | 8 | 323 | L | 4.1 | 8 | 6 | 6 | 1 | 0 | 1 | 84 | 30 | 54 | 64% | 5-2 | 5.31 | 1.36 |
| 1998-05-20 | Pedro Martinez | R | 27 | L 6-2 | vs CHA | 10 | 130 | W | 7.0 | 4 | 1 | 1 | 0 | 2 | 5 | 100 | 37 | 63 | 63% | 5-0 | 1.75 | 0.97 |
| 1998-05-22 | Tim Wakefield | R | 32 | L 5-4 | vs NYA | 10 | 131 | W | 7.0 | 7 | 4 | 4 | 1 | 2 | 3 | 85 | 28 | 57 | 67% | 6-1 | 4.25 | 1.15 |
| 1998-05-23 | Derek Lowe | R | 25 | W 3-12 | vs NYA | 4 | 13 | L | 1.1 | 5 | 5 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | -- | 0-3 | 3.38 | 1.25 |
| 1998-05-24 | Bret Saberhagen | R | 34 | W 4-14 | vs NYA | 9 | 324 | L | 2.2 | 8 | 7 | 7 | 1 | 0 | 2 | 0 | 0 | 0 | -- | 5-3 | 6.43 | 1.45 |
| 1998-05-25 | Pedro Martinez | R | 27 | W 5-7 | vs TOR | 11 | 131 | L | 7.2 | 12 | 7 | 7 | 3 | 1 | 8 | 120 | 43 | 77 | 64% | 5-1 | 2.36 | 1.04 |
| 1998-05-26 | Steve Avery | L | 28 | W 2-5 | vs TOR | 2 | 221 | L | 4.0 | 6 | 5 | 5 | 1 | 2 | 2 | 73 | 31 | 42 | 58% | 1-1 | 6.60 | 1.53 |
| 1998-05-28 | Tim Wakefield | R | 32 | L 3-8 | @ NYA | 11 | 132 | L | 3.1 | 7 | 5 | 4 | 1 | 4 | 2 | 91 | 35 | 56 | 62% | 6-2 | 4.44 | 1.22 |
| 1998-05-29 | Derek Lowe | R | 25 | L 2-6 | @ NYA | 5 | 14 | L | 3.1 | 8 | 6 | 6 | 0 | 2 | 1 | 76 | 32 | 44 | 58% | 0-4 | 4.40 | 1.40 |
| 1998-05-30 | Bret Saberhagen | R | 34 | W 3-2 | @ NYA | 10 | 325 | W | 6.2 | 5 | 1 | 1 | 0 | 2 | 6 | 101 | 29 | 72 | 71% | 6-3 | 5.69 | 1.39 |
| 1998-05-31 | Pedro Martinez | R | 27 | W 13-7 | @ NYA | 12 | 132 | W | 5.2 | 8 | 4 | 4 | 1 | 2 | 6 | 131 | 47 | 84 | 64% | 6-1 | 2.62 | 1.08 |
| 1998-06-01 | Tim Wakefield | R | 32 | W 9-5 | @ TOR | 12 | 133 | - | 6.0 | 4 | 4 | 4 | 1 | 4 | 2 | 99 | 33 | 66 | 67% | 6-2 | 4.55 | 1.23 |
| 1998-06-02 | Steve Avery | L | 28 | W 11-3 | @ TOR | 3 | 222 | W | 5.0 | 3 | 3 | 3 | 0 | 6 | 3 | 82 | 38 | 44 | 54% | 2-1 | 6.30 | 1.60 |
| 1998-06-03 | Derek Lowe | R | 25 | W 0-3 | vs BAL | 6 | 15 | L | 5.2 | 6 | 3 | 3 | 0 | 2 | 2 | 68 | 24 | 44 | 65% | 0-5 | 4.41 | 1.39 |
| 1998-06-04 | Bret Saberhagen | R | 34 | L 9-1 | vs BAL | 11 | 326 | W | 7.0 | 7 | 1 | 1 | 1 | 1 | 3 | 81 | 27 | 54 | 67% | 7-3 | 5.14 | 1.36 |
| 1998-06-05 | Pedro Martinez | R | 27 | W 2-9 | vs NYN | 13 | 133 | L | 4.0 | 8 | 6 | 6 | 4 | 1 | 4 | 0 | 0 | 0 | -- | 6-2 | 3.10 | 1.13 |
| 1998-06-06 | Tim Wakefield | R | 32 | W 0-1 | vs NYN | 13 | 134 | L | 8.0 | 1 | 1 | 1 | 0 | 1 | 3 | 97 | 30 | 67 | 69% | 6-3 | 4.25 | 1.14 |
| 1998-06-07 | Steve Avery | L | 28 | L 5-0 | vs NYN | 4 | 223 | W | 7.0 | 3 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | -- | 3-1 | 4.67 | 1.33 |
| 1998-06-08 | Derek Lowe | R | 25 | L 6-7 | @ ATL | 7 | 16 | - | 6.0 | 5 | 1 | 1 | 0 | 4 | 2 | 89 | 41 | 48 | 54% | 0-5 | 4.09 | 1.40 |
| 1998-06-09 | Bret Saberhagen | R | 34 | W 9-3 | @ ATL | 12 | 327 | W | 7.0 | 7 | 3 | 3 | 1 | 0 | 7 | 96 | 31 | 65 | 68% | 8-3 | 5.00 | 1.32 |
| 1998-06-10 | Pedro Martinez | R | 27 | W 10-6 | @ ATL | 14 | 134 | W | 6.2 | 9 | 6 | 6 | 4 | 2 | 8 | 112 | 34 | 78 | 70% | 7-2 | 3.47 | 1.18 |
| 1998-06-12 | Tim Wakefield | R | 32 | L 5-1 | vs TBA | 14 | 135 | W | 6.2 | 9 | 1 | 1 | 0 | 1 | 3 | 99 | 30 | 69 | 70% | 7-3 | 4.08 | 1.18 |
| 1998-06-14 | Steve Avery | L | 28 | L 3-2 | vs TBA | 5 | 224 | - | 6.0 | 9 | 2 | 2 | 1 | 1 | 2 | 77 | 28 | 49 | 64% | 3-1 | 4.36 | 1.39 |
| 1998-06-15 | Bret Saberhagen | R | 34 | L 2-3 | @ CHA | 13 | 328 | L | 5.0 | 6 | 3 | 3 | 0 | 1 | 0 | 76 | 23 | 53 | 70% | 8-4 | 5.03 | 1.32 |
| 1998-06-16 | Pedro Martinez | R | 27 | W 6-1 | @ CHA | 15 | 135 | W | 7.0 | 4 | 1 | 1 | 1 | 5 | 11 | 144 | 59 | 85 | 59% | 8-2 | 3.32 | 1.18 |
| 1998-06-17 | Tim Wakefield | R | 32 | W 12-5 | @ CHA | 15 | 136 | W | 6.0 | 3 | 5 | 4 | 0 | 4 | 7 | 105 | 46 | 59 | 56% | 8-3 | 4.19 | 1.17 |
| 1998-06-18 | Derek Lowe | R | 25 | W 7-5 | @ TBA | 8 | 17 | - | 6.0 | 6 | 3 | 3 | 2 | 0 | 4 | 91 | 27 | 64 | 70% | 0-5 | 4.06 | 1.35 |
| 1998-06-19 | Steve Avery | L | 28 | W 4-1 | @ TBA | 6 | 225 | W | 5.1 | 4 | 1 | 1 | 0 | 3 | 3 | 91 | 39 | 52 | 57% | 4-1 | 4.03 | 1.39 |
| 1998-06-20 | Bret Saberhagen | R | 34 | L 5-8 | @ TBA | 14 | 329 | L | 4.0 | 7 | 6 | 6 | 1 | 0 | 0 | 79 | 29 | 50 | 63% | 8-5 | 5.50 | 1.35 |
| 1998-06-21 | Pedro Martinez | R | 27 | W 3-1 | @ TBA | 16 | 136 | W | 8.0 | 1 | 1 | 1 | 0 | 2 | 6 | 120 | 38 | 82 | 68% | 9-2 | 3.16 | 1.13 |
| 1998-06-22 | Tim Wakefield | R | 32 | W 8-9 | vs PHI | 16 | 137 | - | 5.2 | 7 | 6 | 6 | 0 | 2 | 3 | 83 | 30 | 53 | 64% | 8-3 | 4.46 | 1.19 |
| 1998-06-23 | Derek Lowe | R | 25 | W 2-3 | vs PHI | 9 | 18 | L | 6.0 | 7 | 3 | 3 | 1 | 2 | 4 | 99 | 42 | 57 | 58% | 0-6 | 4.10 | 1.37 |
| 1998-06-24 | Steve Avery | L | 28 | L 8-11 | @ PHI | 7 | 226 | L | 2.1 | 6 | 7 | 7 | 0 | 2 | 1 | 53 | 22 | 31 | 58% | 4-2 | 5.40 | 1.53 |
| 1998-06-25 | Bret Saberhagen | R | 34 | W 7-5 | @ PHI | 15 | 330 | W | 6.0 | 5 | 1 | 0 | 0 | 0 | 1 | 87 | 22 | 65 | 75% | 9-5 | 5.08 | 1.31 |
| 1998-06-26 | Pedro Martinez | R | 27 | W 6-1 | @ FLO | 17 | 137 | W | 8.0 | 5 | 1 | 1 | 0 | 1 | 6 | 137 | 54 | 83 | 61% | 10-2 | 3.03 | 1.10 |
| 1998-06-27 | Tim Wakefield | R | 32 | W 9-4 | @ FLO | 17 | 138 | W | 7.2 | 6 | 4 | 3 | 1 | 5 | 3 | 119 | 53 | 66 | 55% | 9-3 | 4.38 | 1.21 |
| 1998-06-28 | Derek Lowe | R | 25 | L 1-5 | @ FLO | 10 | 19 | L | 4.2 | 5 | 3 | 3 | 0 | 3 | 3 | 102 | 48 | 54 | 53% | 0-7 | 4.25 | 1.40 |
| 1998-06-30 | Steve Avery | L | 28 | L 7-4 | vs MON | 8 | 227 | W | 6.0 | 4 | 2 | 2 | 1 | 0 | 3 | 77 | 27 | 50 | 65% | 5-2 | 5.09 | 1.41 |
| 1998-07-01 | Bret Saberhagen | R | 34 | L 6-1 | vs MON | 16 | 331 | W | 7.0 | 3 | 1 | 1 | 1 | 0 | 5 | 88 | 27 | 61 | 69% | 10-5 | 4.76 | 1.24 |
| 1998-07-02 | Pedro Martinez | R | 27 | L 15-0 | vs MON | 18 | 138 | W | 6.0 | 2 | 0 | 0 | 0 | 0 | 5 | 67 | 14 | 53 | 79% | 11-2 | 2.88 | 1.06 |
| 1998-07-03 | Tim Wakefield | R | 32 | L 15-2 | vs CHA | 18 | 139 | W | 7.0 | 5 | 2 | 2 | 0 | 3 | 7 | 94 | 36 | 58 | 62% | 10-3 | 4.28 | 1.20 |
| 1998-07-04 | Jin Ho Cho | R | 23 | W 0-3 | vs CHA | 1 | 1 | L | 6.0 | 6 | 1 | 1 | 1 | 1 | 2 | 76 | 27 | 49 | 64% | 0-1 | 1.50 | 1.17 |
| 1998-07-05 | Steve Avery | L | 28 | L 15-14 | vs CHA | 9 | 228 | - | 5.0 | 6 | 3 | 3 | 1 | 2 | 1 | 71 | 28 | 43 | 61% | 5-2 | 5.12 | 1.43 |
| 1998-07-09 | Bret Saberhagen | R | 34 | L 2-3 | @ BAL | 17 | 332 | - | 5.0 | 7 | 2 | 2 | 2 | 2 | 4 | 102 | 41 | 61 | 60% | 10-5 | 4.70 | 1.27 |
| 1998-07-10 | Pedro Martinez | R | 27 | L 2-3 | @ BAL | 19 | 139 | L | 8.0 | 5 | 3 | 3 | 2 | 1 | 5 | 107 | 37 | 70 | 65% | 11-3 | 2.91 | 1.05 |
| 1998-07-11 | Tim Wakefield | R | 32 | L 1-2 | @ BAL | 19 | 140 | L | 6.2 | 11 | 2 | 2 | 1 | 1 | 5 | 99 | 35 | 64 | 65% | 10-4 | 4.22 | 1.24 |
| 1998-07-12 | Jin Ho Cho | R | 23 | L 7-11 | @ BAL | 2 | 2 | L | 4.1 | 6 | 7 | 7 | 1 | 2 | 5 | 86 | 35 | 51 | 59% | 0-2 | 7.20 | 1.50 |
| 1998-07-13 | Steve Avery | L | 28 | W 2-0 | @ TBA | 10 | 229 | W | 5.2 | 5 | 0 | 0 | 0 | 4 | 4 | 92 | 42 | 50 | 54% | 6-2 | 4.58 | 1.44 |
| 1998-07-14 | Bret Saberhagen | R | 34 | L 4-5 | @ TBA | 18 | 333 | - | 5.1 | 7 | 4 | 4 | 1 | 0 | 2 | 76 | 27 | 49 | 64% | 10-5 | 4.83 | 1.27 |
| 1998-07-15 | Pedro Martinez | R | 27 | L 1-0 | vs CLE | 20 | 140 | W | 9.0 | 4 | 0 | 0 | 0 | 2 | 9 | 118 | 45 | 73 | 62% | 12-3 | 2.73 | 1.02 |
| 1998-07-16 | Tim Wakefield | R | 32 | L 15-5 | vs CLE | 20 | 141 | W | 7.1 | 7 | 5 | 5 | 3 | 2 | 6 | 102 | 35 | 67 | 66% | 11-4 | 4.30 | 1.23 |
| 1998-07-17 | Jin Ho Cho | R | 23 | L 4-6 | @ DET | 3 | 3 | L | 5.1 | 9 | 5 | 5 | 1 | 0 | 5 | 71 | 16 | 55 | 77% | 0-3 | 7.31 | 1.50 |
| 1998-07-18 | Steve Avery | L | 28 | W 9-4 | @ DET | 11 | 230 | W | 6.0 | 6 | 4 | 3 | 2 | 2 | 0 | 83 | 38 | 45 | 54% | 7-2 | 4.57 | 1.43 |
| 1998-07-19 | Bret Saberhagen | R | 34 | L 1-3 | @ DET | 19 | 334 | - | 7.0 | 5 | 1 | 1 | 1 | 0 | 8 | 88 | 26 | 62 | 70% | 10-5 | 4.59 | 1.24 |
| 1998-07-21 | Pedro Martinez | R | 27 | W 10-7 | @ CLE | 21 | 141 | W | 7.0 | 7 | 4 | 2 | 1 | 4 | 3 | 127 | 40 | 87 | 69% | 13-3 | 2.72 | 1.05 |
| 1998-07-21 | Tim Wakefield | R | 32 | L 2-4 | @ CLE | 21 | 142 | L | 7.0 | 8 | 4 | 3 | 1 | 4 | 8 | 133 | 59 | 74 | 56% | 11-5 | 4.28 | 1.26 |
| 1998-07-22 | John Wasdin | R | 26 | L 3-4 | @ CLE | 2 | 32 | - | 5.1 | 6 | 1 | 1 | 1 | 3 | 2 | 88 | 34 | 54 | 61% | 4-3 | 5.22 | 1.46 |
| 1998-07-23 | Jin Ho Cho | R | 23 | L 8-7 | vs TOR | 4 | 4 | - | 3.0 | 7 | 4 | 4 | 1 | 0 | 3 | 62 | 17 | 45 | 73% | 0-3 | 8.05 | 1.63 |
| 1998-07-24 | Steve Avery | L | 28 | W 6-10 | vs TOR | 12 | 231 | L | 3.0 | 6 | 7 | 6 | 1 | 4 | 1 | 0 | 0 | 0 | -- | 7-3 | 5.18 | 1.52 |
| 1998-07-25 | Bret Saberhagen | R | 34 | L 5-3 | vs TOR | 20 | 335 | - | 7.0 | 7 | 3 | 3 | 0 | 0 | 6 | 110 | 36 | 74 | 67% | 10-5 | 4.54 | 1.22 |
| 1998-07-26 | Pedro Martinez | R | 27 | L 6-3 | vs TOR | 22 | 142 | W | 7.0 | 6 | 0 | 0 | 0 | 1 | 6 | 115 | 40 | 75 | 65% | 14-3 | 2.60 | 1.04 |
| 1998-07-28 | Tim Wakefield | R | 32 | W 8-4 | @ OAK | 22 | 143 | W | 5.2 | 5 | 3 | 3 | 1 | 6 | 8 | 109 | 50 | 59 | 54% | 12-5 | 4.26 | 1.28 |
| 1998-07-29 | John Wasdin | R | 26 | W 10-2 | @ OAK | 3 | 33 | W | 6.0 | 6 | 2 | 2 | 0 | 1 | 6 | 98 | 36 | 62 | 63% | 5-3 | 4.89 | 1.44 |
| 1998-07-30 | Steve Avery | L | 28 | L 5-6 | @ OAK | 13 | 232 | L | 2.2 | 4 | 4 | 4 | 0 | 4 | 1 | 0 | 0 | 0 | -- | 7-4 | 5.48 | 1.57 |
| 1998-07-31 | Bret Saberhagen | R | 34 | W 7-2 | @ ANA | 21 | 336 | W | 7.0 | 5 | 1 | 0 | 0 | 0 | 0 | 89 | 34 | 55 | 62% | 11-5 | 4.27 | 1.19 |
| 1998-08-01 | Pedro Martinez | R | 27 | W 11-3 | @ ANA | 23 | 143 | W | 7.0 | 6 | 3 | 3 | 1 | 3 | 5 | 109 | 38 | 71 | 65% | 15-3 | 2.65 | 1.06 |
| 1998-08-02 | Tim Wakefield | R | 32 | W 8-7 | @ ANA | 23 | 144 | W | 5.1 | 4 | 4 | 4 | 1 | 4 | 5 | 100 | 44 | 56 | 56% | 13-5 | 4.33 | 1.28 |
| 1998-08-03 | John Wasdin | R | 26 | L 1-3 | @ SEA | 4 | 34 | L | 7.0 | 8 | 3 | 3 | 1 | 0 | 2 | 99 | 40 | 59 | 60% | 5-4 | 4.78 | 1.41 |
| 1998-08-04 | Steve Avery | L | 28 | W 2-1 | @ SEA | 14 | 233 | W | 6.0 | 2 | 1 | 1 | 1 | 1 | 3 | 82 | 31 | 51 | 62% | 8-4 | 5.16 | 1.48 |
| 1998-08-06 | Bret Saberhagen | R | 34 | L 4-7 | @ TEX | 22 | 337 | L | 6.0 | 8 | 5 | 4 | 0 | 1 | 3 | 93 | 34 | 59 | 63% | 11-6 | 4.35 | 1.20 |
| 1998-08-07 | Pedro Martinez | R | 27 | L 3-4 | @ TEX | 24 | 144 | L | 6.2 | 6 | 4 | 3 | 1 | 2 | 13 | 125 | 44 | 81 | 65% | 15-4 | 2.70 | 1.06 |
| 1998-08-08 | Tim Wakefield | R | 32 | W 11-1 | @ TEX | 24 | 145 | W | 8.0 | 7 | 1 | 1 | 0 | 2 | 4 | 120 | 48 | 72 | 60% | 14-5 | 4.17 | 1.28 |
| 1998-08-09 | John Wasdin | R | 26 | W 14-8 | @ TEX | 5 | 35 | - | 4.1 | 7 | 7 | 7 | 1 | 1 | 4 | 85 | 28 | 57 | 67% | 5-4 | 5.43 | 1.44 |
| 1998-08-11 | Steve Avery | L | 28 | L 7-4 | vs KCA | 15 | 234 | - | 6.0 | 4 | 2 | 2 | 0 | 4 | 5 | 94 | 38 | 56 | 60% | 8-4 | 5.00 | 1.47 |
| 1998-08-12 | Bret Saberhagen | R | 34 | W 4-8 | vs KCA | 23 | 338 | - | 6.0 | 6 | 1 | 1 | 0 | 2 | 4 | 100 | 37 | 63 | 63% | 11-6 | 4.22 | 1.21 |
| 1998-08-13 | Pedro Martinez | R | 27 | L 8-7 | vs MIN | 25 | 145 | - | 6.1 | 10 | 6 | 6 | 0 | 2 | 3 | 121 | 41 | 80 | 66% | 15-4 | 2.91 | 1.09 |
| 1998-08-14 | Tim Wakefield | R | 32 | L 13-12 | vs MIN | 25 | 146 | - | 4.0 | 11 | 9 | 7 | 3 | 2 | 3 | 74 | 28 | 46 | 62% | 14-5 | 4.45 | 1.32 |
| 1998-08-15 | John Wasdin | R | 26 | W 2-3 | vs MIN | 6 | 36 | - | 5.0 | 8 | 2 | 2 | 0 | 1 | 4 | 81 | 25 | 56 | 69% | 5-4 | 5.30 | 1.47 |
| 1998-08-16 | Steve Avery | L | 28 | W 3-6 | vs MIN | 16 | 235 | L | 3.0 | 9 | 6 | 6 | 0 | 3 | 1 | 75 | 35 | 40 | 53% | 8-5 | 5.46 | 1.56 |
| 1998-08-18 | Pedro Martinez | R | 27 | L 4-1 | vs TEX | 26 | 146 | W | 8.2 | 5 | 1 | 1 | 1 | 1 | 10 | 123 | 41 | 82 | 67% | 16-4 | 2.82 | 1.07 |
| 1998-08-18 | Bret Saberhagen | R | 34 | L 5-4 | vs TEX | 24 | 339 | - | 5.0 | 8 | 4 | 4 | 2 | 0 | 1 | 57 | 17 | 40 | 70% | 11-6 | 4.33 | 1.23 |
| 1998-08-19 | Tim Wakefield | R | 32 | W 11-1 | @ KCA | 26 | 147 | W | 9.0 | 5 | 1 | 1 | 0 | 5 | 0 | 117 | 40 | 77 | 66% | 15-5 | 4.27 | 1.31 |
| 1998-08-20 | Pete Schourek | L | 29 | L 2-8 | @ KCA | 16 | 131 | L | 4.0 | 6 | 5 | 5 | 1 | 0 | 4 | 69 | 24 | 45 | 65% | 7-8 | 4.76 | 1.48 |
| 1998-08-21 | Steve Avery | L | 28 | W 9-2 | @ MIN | 17 | 236 | W | 7.0 | 4 | 1 | 1 | 1 | 3 | 1 | 95 | 43 | 52 | 55% | 9-5 | 5.14 | 1.52 |
| 1998-08-22 | John Wasdin | R | 26 | L 3-4 | @ MIN | 7 | 37 | - | 5.0 | 5 | 2 | 2 | 0 | 2 | 2 | 86 | 30 | 56 | 65% | 5-4 | 5.19 | 1.46 |
| 1998-08-23 | Pedro Martinez | R | 27 | W 5-1 | @ MIN | 27 | 147 | W | 6.0 | 4 | 0 | 0 | 0 | 1 | 4 | 81 | 28 | 53 | 65% | 17-4 | 2.73 | 1.06 |
| 1998-08-25 | Tim Wakefield | R | 32 | L 3-2 | vs OAK | 27 | 148 | - | 6.0 | 4 | 1 | 1 | 1 | 4 | 6 | 97 | 41 | 56 | 58% | 15-5 | 4.18 | 1.31 |
| 1998-08-26 | Bret Saberhagen | R | 34 | L 7-4 | vs OAK | 25 | 340 | - | 5.2 | 6 | 4 | 2 | 0 | 1 | 6 | 84 | 31 | 53 | 63% | 11-6 | 4.27 | 1.22 |
| 1998-08-27 | Pete Schourek | L | 29 | W 3-6 | vs OAK | 17 | 132 | L | 2.2 | 7 | 4 | 4 | 0 | 2 | 4 | 73 | 29 | 44 | 60% | 7-9 | 5.06 | 1.55 |
| 1998-08-28 | Steve Avery | L | 28 | W 6-7 | vs ANA | 18 | 237 | L | 4.2 | 4 | 5 | 5 | 0 | 5 | 5 | 96 | 46 | 50 | 52% | 9-6 | 5.40 | 1.55 |
| 1998-08-29 | Pedro Martinez | R | 27 | L 6-1 | vs ANA | 28 | 148 | W | 8.0 | 7 | 1 | 1 | 0 | 1 | 8 | 108 | 37 | 71 | 66% | 18-4 | 2.67 | 1.06 |
| 1998-08-30 | Tim Wakefield | R | 32 | W 6-8 | vs ANA | 28 | 149 | L | 3.2 | 6 | 7 | 7 | 1 | 3 | 2 | 72 | 29 | 43 | 60% | 15-6 | 4.45 | 1.34 |
| 1998-08-31 | Bret Saberhagen | R | 34 | L 5-1 | vs SEA | 26 | 341 | W | 6.2 | 4 | 1 | 1 | 0 | 1 | 4 | 98 | 35 | 63 | 64% | 12-6 | 4.16 | 1.21 |
| 1998-09-01 | Pete Schourek | L | 29 | W 3-7 | vs SEA | 18 | 133 | - | 6.0 | 5 | 2 | 2 | 1 | 2 | 4 | 82 | 35 | 47 | 57% | 7-9 | 4.93 | 1.53 |
| 1998-09-02 | Steve Avery | L | 28 | L 7-3 | vs SEA | 19 | 238 | - | 6.0 | 12 | 2 | 2 | 1 | 0 | 3 | 89 | 28 | 61 | 69% | 9-6 | 5.26 | 1.57 |
| 1998-09-03 | Pedro Martinez | R | 27 | L 3-4 | @ TOR | 29 | 149 | - | 7.0 | 7 | 3 | 3 | 0 | 3 | 11 | 125 | 44 | 81 | 65% | 18-4 | 2.71 | 1.07 |
| 1998-09-04 | Tim Wakefield | R | 32 | L 1-12 | @ TOR | 29 | 150 | L | 6.1 | 8 | 8 | 6 | 2 | 2 | 5 | 103 | 39 | 64 | 62% | 15-7 | 4.57 | 1.34 |
| 1998-09-05 | Bret Saberhagen | R | 34 | L 3-4 | @ TOR | 27 | 342 | L | 6.0 | 8 | 3 | 3 | 3 | 1 | 2 | 76 | 26 | 50 | 66% | 12-7 | 4.17 | 1.22 |
| 1998-09-06 | Pete Schourek | L | 29 | L 7-8 | @ TOR | 19 | 134 | - | 5.0 | 4 | 4 | 4 | 2 | 4 | 5 | 87 | 34 | 53 | 61% | 7-9 | 5.04 | 1.53 |
| 1998-09-07 | Steve Avery | L | 28 | L 4-3 | vs NYA | 20 | 239 | - | 7.0 | 6 | 3 | 3 | 0 | 3 | 1 | 98 | 40 | 58 | 59% | 9-6 | 5.17 | 1.56 |
| 1998-09-08 | Pedro Martinez | R | 27 | W 2-3 | vs NYA | 30 | 150 | L | 7.1 | 5 | 3 | 3 | 0 | 6 | 8 | 140 | 61 | 79 | 56% | 18-5 | 2.75 | 1.09 |
| 1998-09-09 | Tim Wakefield | R | 32 | W 5-7 | vs NYA | 30 | 151 | L | 4.0 | 5 | 5 | 5 | 2 | 1 | 4 | 61 | 19 | 42 | 69% | 15-8 | 4.70 | 1.35 |
| 1998-09-11 | Bret Saberhagen | R | 34 | L 6-2 | vs DET | 28 | 343 | W | 6.0 | 5 | 0 | 0 | 0 | 0 | 6 | 95 | 30 | 65 | 68% | 13-7 | 4.01 | 1.20 |
| 1998-09-12 | Pete Schourek | L | 29 | W 2-3 | vs DET | 20 | 135 | - | 6.2 | 5 | 1 | 1 | 1 | 2 | 5 | 93 | 34 | 59 | 63% | 7-9 | 4.79 | 1.50 |
| 1998-09-13 | Steve Avery | L | 28 | W 1-4 | vs DET | 21 | 240 | - | 6.0 | 2 | 1 | 1 | 0 | 5 | 4 | 84 | 35 | 49 | 58% | 9-6 | 4.97 | 1.54 |
| 1998-09-14 | Pedro Martinez | R | 27 | L 0-3 | @ NYA | 31 | 151 | L | 7.0 | 7 | 3 | 3 | 0 | 0 | 9 | 107 | 31 | 76 | 71% | 18-6 | 2.78 | 1.09 |
| 1998-09-15 | Tim Wakefield | R | 32 | W 9-4 | @ NYA | 31 | 152 | W | 6.1 | 7 | 3 | 3 | 1 | 1 | 3 | 96 | 35 | 61 | 64% | 16-8 | 4.70 | 1.35 |
| 1998-09-16 | Bret Saberhagen | R | 34 | W 4-3 | @ BAL | 29 | 344 | W | 6.2 | 6 | 2 | 2 | 1 | 1 | 1 | 78 | 26 | 52 | 67% | 14-7 | 3.95 | 1.20 |
| 1998-09-17 | Pete Schourek | L | 29 | W 3-2 | @ BAL | 21 | 136 | - | 6.0 | 4 | 2 | 2 | 1 | 1 | 4 | 88 | 38 | 50 | 57% | 7-9 | 4.70 | 1.46 |
| 1998-09-18 | Steve Avery | L | 28 | L 9-11 | @ CHA | 22 | 241 | L | 3.1 | 7 | 5 | 5 | 2 | 1 | 3 | 57 | 22 | 35 | 61% | 9-7 | 5.19 | 1.55 |
| 1998-09-19 | Pedro Martinez | R | 27 | L 2-5 | @ CHA | 32 | 152 | L | 7.0 | 4 | 5 | 2 | 1 | 3 | 9 | 120 | 47 | 73 | 61% | 18-7 | 2.78 | 1.08 |
| 1998-09-20 | Tim Wakefield | R | 32 | L 4-6 | @ CHA | 32 | 153 | - | 5.0 | 5 | 3 | 1 | 1 | 3 | 4 | 81 | 34 | 47 | 58% | 16-8 | 4.63 | 1.35 |
| 1998-09-21 | Bret Saberhagen | R | 34 | L 4-3 | vs TBA | 30 | 345 | W | 6.0 | 7 | 2 | 2 | 0 | 2 | 6 | 88 | 30 | 58 | 66% | 15-7 | 3.92 | 1.21 |
| 1998-09-21 | John Wasdin | R | 26 | W 4-8 | vs TBA | 8 | 38 | - | 4.0 | 5 | 3 | 3 | 0 | 0 | 2 | 52 | 16 | 36 | 69% | 6-4 | 5.27 | 1.45 |
| 1998-09-22 | Pete Schourek | L | 29 | L 11-2 | vs TBA | 22 | 137 | W | 8.0 | 6 | 2 | 2 | 1 | 0 | 5 | 90 | 29 | 61 | 68% | 8-9 | 4.54 | 1.41 |
| 1998-09-23 | Steve Avery | L | 28 | L 5-4 | vs TBA | 23 | 242 | W | 5.0 | 5 | 3 | 0 | 0 | 2 | 3 | 76 | 31 | 45 | 59% | 10-7 | 4.98 | 1.54 |
| 1998-09-24 | Pedro Martinez | R | 27 | L 9-6 | vs BAL | 33 | 153 | W | 6.1 | 6 | 5 | 5 | 3 | 3 | 6 | 101 | 35 | 66 | 65% | 19-7 | 2.88 | 1.09 |
| 1998-09-25 | Tim Wakefield | R | 32 | L 8-3 | vs BAL | 33 | 154 | W | 6.0 | 6 | 2 | 2 | 1 | 0 | 5 | 73 | 14 | 59 | 81% | 17-8 | 4.58 | 1.34 |
| 1998-09-26 | Bret Saberhagen | R | 34 | W 2-5 | vs BAL | 31 | 346 | L | 5.0 | 4 | 3 | 3 | 2 | 1 | 0 | 71 | 24 | 47 | 66% | 15-8 | 3.96 | 1.20 |
| 1998-09-27 | Pete Schourek | L | 29 | L 6-4 | vs BAL | 23 | 138 | - | 3.0 | 4 | 0 | 0 | 0 | 1 | 2 | 67 | 26 | 41 | 61% | 8-9 | 4.43 | 1.42 |