| West | W | L | Pct | GB |
| Anaheim | 92 | 70 | .568 | -- |
| Oakland | 91 | 71 | .562 | 1.0 |
| Texas | 89 | 73 | .549 | 3.0 |
| Seattle | 63 | 99 | .389 | 29.0 |
| 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 |
| 2004-04-06 | Bartolo Colon | R | 29 | W 10-5 | @ SEA | 1 | 212 | W | 6.0 | 5 | 1 | 0 | 0 | 0 | 5 | 100 | 38 | 62 | 62% | 1-0 | 0.00 | 0.83 |
| 2004-04-07 | Jarrod Washburn | L | 30 | W 10-7 | @ SEA | 1 | 130 | W | 5.1 | 10 | 6 | 6 | 1 | 0 | 6 | 102 | 40 | 62 | 61% | 1-0 | 10.80 | 2.00 |
| 2004-04-08 | Kelvim Escobar | R | 28 | W 5-1 | @ SEA | 1 | 102 | - | 6.0 | 7 | 1 | 1 | 0 | 2 | 4 | 99 | 44 | 55 | 56% | 0-0 | 1.50 | 1.50 |
| 2004-04-09 | Ramon Ortiz | R | 31 | L 4-12 | @ TEX | 1 | 124 | L | 2.2 | 9 | 7 | 7 | 1 | 1 | 4 | 69 | 30 | 39 | 57% | 0-1 | 21.00 | 3.33 |
| 2004-04-10 | John Lackey | R | 25 | L 6-12 | @ TEX | 1 | 52 | L | 3.2 | 9 | 7 | 7 | 2 | 2 | 1 | 73 | 28 | 45 | 62% | 0-1 | 15.75 | 2.75 |
| 2004-04-11 | Bartolo Colon | R | 29 | W 7-2 | @ TEX | 2 | 213 | W | 8.0 | 7 | 2 | 1 | 0 | 1 | 5 | 104 | 31 | 73 | 70% | 2-0 | 0.64 | 0.93 |
| 2004-04-12 | Jarrod Washburn | L | 30 | L 6-7 | @ TEX | 2 | 131 | L | 5.1 | 8 | 4 | 4 | 0 | 2 | 4 | 105 | 37 | 68 | 65% | 1-1 | 8.18 | 1.82 |
| 2004-04-13 | Kelvim Escobar | R | 28 | L 7-5 | vs SEA | 2 | 103 | - | 6.0 | 9 | 4 | 4 | 1 | 2 | 3 | 104 | 39 | 65 | 63% | 0-0 | 3.75 | 1.67 |
| 2004-04-14 | Ramon Ortiz | R | 31 | L 6-5 | vs SEA | 2 | 125 | - | 5.2 | 8 | 4 | 4 | 1 | 3 | 4 | 102 | 39 | 63 | 62% | 0-1 | 12.38 | 2.63 |
| 2004-04-15 | John Lackey | R | 25 | W 2-6 | vs SEA | 2 | 53 | L | 5.1 | 6 | 6 | 4 | 0 | 0 | 0 | 97 | 34 | 63 | 65% | 0-2 | 11.00 | 1.89 |
| 2004-04-16 | Bartolo Colon | R | 29 | W 0-3 | vs OAK | 3 | 214 | L | 8.0 | 9 | 3 | 3 | 3 | 1 | 5 | 112 | 33 | 79 | 71% | 2-1 | 1.64 | 1.05 |
| 2004-04-17 | Jarrod Washburn | L | 30 | L 6-3 | vs OAK | 3 | 132 | W | 5.0 | 5 | 2 | 2 | 0 | 3 | 5 | 106 | 44 | 62 | 58% | 2-1 | 6.75 | 1.75 |
| 2004-04-18 | Kelvim Escobar | R | 28 | W 1-7 | vs OAK | 3 | 104 | L | 5.2 | 7 | 4 | 4 | 1 | 1 | 7 | 110 | 43 | 67 | 61% | 0-1 | 4.50 | 1.56 |
| 2004-04-20 | Ramon Ortiz | R | 31 | W 3-6 | vs TEX | 3 | 126 | L | 2.1 | 6 | 4 | 4 | 1 | 1 | 1 | 47 | 16 | 31 | 66% | 0-2 | 12.27 | 2.55 |
| 2004-04-21 | John Lackey | R | 25 | W 1-4 | vs TEX | 3 | 54 | L | 6.2 | 7 | 3 | 3 | 0 | 2 | 2 | 105 | 40 | 65 | 62% | 0-3 | 7.88 | 1.63 |
| 2004-04-22 | Bartolo Colon | R | 29 | L 7-5 | vs TEX | 4 | 215 | W | 5.0 | 5 | 3 | 3 | 2 | 3 | 4 | 100 | 40 | 60 | 60% | 3-1 | 2.33 | 1.15 |
| 2004-04-23 | Jarrod Washburn | L | 30 | W 12-2 | @ OAK | 4 | 133 | W | 5.0 | 5 | 2 | 2 | 1 | 5 | 1 | 100 | 40 | 60 | 60% | 3-1 | 6.00 | 1.81 |
| 2004-04-24 | Kelvim Escobar | R | 28 | W 6-3 | @ OAK | 4 | 105 | W | 5.0 | 3 | 3 | 3 | 2 | 0 | 6 | 83 | 32 | 51 | 61% | 1-1 | 4.70 | 1.35 |
| 2004-04-25 | Ramon Ortiz | R | 31 | W 4-3 | @ OAK | 4 | 127 | W | 5.0 | 5 | 2 | 2 | 0 | 3 | 6 | 113 | 45 | 68 | 60% | 1-2 | 9.56 | 2.25 |
| 2004-04-27 | John Lackey | R | 26 | W 10-4 | @ DET | 4 | 55 | W | 6.2 | 4 | 3 | 3 | 0 | 4 | 2 | 108 | 49 | 59 | 55% | 1-3 | 6.95 | 1.55 |
| 2004-04-28 | Bartolo Colon | R | 29 | L 2-10 | @ DET | 5 | 216 | L | 4.0 | 7 | 7 | 7 | 0 | 3 | 6 | 86 | 37 | 49 | 57% | 3-2 | 4.06 | 1.32 |
| 2004-04-29 | Jarrod Washburn | L | 30 | W 12-3 | @ DET | 5 | 134 | W | 8.0 | 9 | 3 | 3 | 0 | 0 | 6 | 113 | 32 | 81 | 72% | 4-1 | 5.28 | 1.62 |
| 2004-04-30 | Ramon Ortiz | R | 31 | L 3-6 | @ MIN | 5 | 128 | L | 5.2 | 12 | 6 | 5 | 1 | 2 | 3 | 103 | 36 | 67 | 65% | 1-3 | 9.43 | 2.38 |
| 2004-05-01 | Aaron Sele | R | 34 | W 1-0 | @ MIN | 1 | 293 | - | 5.0 | 2 | 0 | 0 | 0 | 1 | 2 | 61 | 24 | 37 | 61% | 0-0 | 3.60 | 1.47 |
| 2004-05-02 | John Lackey | R | 26 | W 3-1 | @ MIN | 5 | 56 | W | 7.0 | 6 | 1 | 1 | 1 | 0 | 5 | 99 | 33 | 66 | 67% | 2-3 | 5.59 | 1.38 |
| 2004-05-03 | Bartolo Colon | R | 29 | L 11-9 | vs DET | 6 | 217 | - | 6.0 | 10 | 6 | 4 | 1 | 2 | 4 | 95 | 35 | 60 | 63% | 3-2 | 4.38 | 1.43 |
| 2004-05-04 | Jarrod Washburn | L | 30 | L 11-4 | vs DET | 6 | 135 | W | 6.2 | 6 | 4 | 4 | 3 | 2 | 4 | 105 | 38 | 67 | 64% | 5-1 | 5.40 | 1.57 |
| 2004-05-05 | Kelvim Escobar | R | 28 | L 6-3 | vs DET | 5 | 106 | W | 5.2 | 4 | 3 | 3 | 1 | 3 | 4 | 107 | 35 | 72 | 67% | 2-1 | 4.82 | 1.36 |
| 2004-05-06 | Aaron Sele | R | 34 | L 7-3 | vs TBA | 2 | 294 | W | 6.0 | 8 | 3 | 3 | 0 | 2 | 2 | 95 | 36 | 59 | 62% | 1-0 | 3.86 | 1.52 |
| 2004-05-07 | John Lackey | R | 26 | L 1-0 | vs TBA | 6 | 57 | W | 9.0 | 3 | 0 | 0 | 0 | 1 | 3 | 107 | 34 | 73 | 68% | 3-3 | 4.26 | 1.16 |
| 2004-05-08 | Bartolo Colon | R | 29 | L 7-2 | vs TBA | 7 | 218 | W | 7.0 | 2 | 2 | 2 | 1 | 2 | 3 | 104 | 39 | 65 | 63% | 4-2 | 4.09 | 1.30 |
| 2004-05-09 | Jarrod Washburn | L | 30 | L 8-4 | vs TBA | 7 | 136 | W | 6.2 | 10 | 4 | 3 | 1 | 0 | 5 | 90 | 28 | 62 | 69% | 6-1 | 5.14 | 1.55 |
| 2004-05-11 | Kelvim Escobar | R | 28 | L 7-8 | @ NYA | 6 | 107 | - | 3.0 | 3 | 2 | 2 | 0 | 2 | 2 | 62 | 28 | 34 | 55% | 2-1 | 4.94 | 1.39 |
| 2004-05-12 | Aaron Sele | R | 34 | W 11-2 | @ NYA | 3 | 295 | W | 6.0 | 6 | 2 | 2 | 0 | 1 | 3 | 100 | 41 | 59 | 59% | 2-0 | 3.67 | 1.44 |
| 2004-05-13 | John Lackey | R | 26 | L 4-7 | @ NYA | 7 | 58 | L | 6.2 | 10 | 6 | 6 | 3 | 1 | 5 | 109 | 43 | 66 | 61% | 3-4 | 4.80 | 1.22 |
| 2004-05-14 | Bartolo Colon | R | 29 | W 10-9 | @ BAL | 8 | 219 | - | 5.0 | 5 | 5 | 5 | 2 | 4 | 5 | 83 | 34 | 49 | 59% | 4-2 | 4.59 | 1.35 |
| 2004-05-15 | Jarrod Washburn | L | 30 | W 7-4 | @ BAL | 8 | 137 | W | 8.0 | 3 | 2 | 2 | 1 | 0 | 5 | 102 | 34 | 68 | 67% | 7-1 | 4.68 | 1.36 |
| 2004-05-16 | Kelvim Escobar | R | 28 | L 0-4 | @ BAL | 7 | 108 | L | 6.1 | 7 | 3 | 3 | 0 | 2 | 1 | 108 | 41 | 67 | 62% | 2-2 | 4.74 | 1.37 |
| 2004-05-18 | Aaron Sele | R | 34 | L 1-0 | vs NYA | 4 | 296 | - | 6.0 | 2 | 0 | 0 | 0 | 4 | 2 | 102 | 51 | 51 | 50% | 2-0 | 3.00 | 1.36 |
| 2004-05-19 | John Lackey | R | 26 | W 2-4 | vs NYA | 8 | 59 | L | 5.1 | 5 | 3 | 3 | 1 | 6 | 4 | 100 | 47 | 53 | 53% | 3-5 | 4.86 | 1.32 |
| 2004-05-20 | Bartolo Colon | R | 29 | W 2-6 | vs NYA | 9 | 220 | L | 5.0 | 9 | 6 | 6 | 2 | 1 | 4 | 87 | 38 | 49 | 56% | 4-3 | 5.17 | 1.41 |
| 2004-05-21 | Jarrod Washburn | L | 30 | L 5-3 | vs BAL | 9 | 138 | - | 6.2 | 9 | 3 | 3 | 1 | 1 | 2 | 110 | 42 | 68 | 62% | 7-1 | 4.58 | 1.37 |
| 2004-05-22 | Kelvim Escobar | R | 28 | L 3-2 | vs BAL | 8 | 109 | W | 7.0 | 5 | 2 | 2 | 2 | 2 | 6 | 105 | 38 | 67 | 64% | 3-2 | 4.40 | 1.31 |
| 2004-05-23 | Aaron Sele | R | 34 | L 8-3 | vs BAL | 5 | 297 | W | 5.0 | 6 | 3 | 2 | 0 | 1 | 3 | 92 | 37 | 55 | 60% | 3-0 | 3.08 | 1.37 |
| 2004-05-24 | John Lackey | R | 26 | L 5-6 | @ TOR | 9 | 60 | - | 5.2 | 6 | 4 | 4 | 0 | 2 | 3 | 97 | 35 | 62 | 64% | 3-5 | 4.98 | 1.32 |
| 2004-05-26 | Bartolo Colon | R | 29 | L 5-6 | @ TOR | 10 | 221 | - | 6.2 | 7 | 4 | 4 | 2 | 3 | 7 | 117 | 39 | 78 | 67% | 4-3 | 5.16 | 1.41 |
| 2004-05-27 | Jarrod Washburn | L | 30 | L 2-3 | @ TOR | 10 | 139 | L | 7.0 | 8 | 3 | 3 | 0 | 3 | 2 | 114 | 43 | 71 | 62% | 7-2 | 4.50 | 1.39 |
| 2004-05-28 | Kelvim Escobar | R | 28 | L 3-4 | @ CHA | 9 | 110 | - | 6.2 | 7 | 2 | 2 | 1 | 4 | 4 | 133 | 52 | 81 | 61% | 3-2 | 4.24 | 1.37 |
| 2004-05-29 | Aaron Sele | R | 34 | W 5-1 | @ CHA | 6 | 298 | W | 6.1 | 4 | 1 | 1 | 1 | 2 | 6 | 116 | 50 | 66 | 57% | 4-0 | 2.80 | 1.29 |
| 2004-05-30 | John Lackey | R | 26 | L 2-11 | @ CHA | 10 | 61 | L | 3.0 | 9 | 8 | 8 | 1 | 2 | 1 | 81 | 29 | 52 | 64% | 3-6 | 5.95 | 1.44 |
| 2004-06-01 | Bartolo Colon | R | 29 | L 7-6 | vs BOS | 11 | 222 | - | 4.0 | 8 | 4 | 4 | 1 | 2 | 7 | 107 | 40 | 67 | 63% | 4-3 | 5.40 | 1.48 |
| 2004-06-02 | Jarrod Washburn | L | 30 | L 10-7 | vs BOS | 11 | 140 | - | 3.1 | 9 | 7 | 7 | 1 | 3 | 0 | 76 | 34 | 42 | 55% | 7-2 | 5.24 | 1.51 |
| 2004-06-03 | Kelvim Escobar | R | 28 | L 5-2 | vs CLE | 10 | 111 | W | 8.0 | 8 | 1 | 1 | 0 | 1 | 6 | 102 | 26 | 76 | 75% | 4-2 | 3.81 | 1.34 |
| 2004-06-04 | Aaron Sele | R | 34 | W 6-9 | vs CLE | 7 | 299 | - | 5.0 | 9 | 4 | 4 | 1 | 4 | 3 | 95 | 42 | 53 | 56% | 4-0 | 3.24 | 1.42 |
| 2004-06-05 | John Lackey | R | 26 | W 2-3 | vs CLE | 11 | 62 | L | 8.0 | 8 | 3 | 3 | 1 | 2 | 4 | 112 | 48 | 64 | 57% | 3-7 | 5.64 | 1.42 |
| 2004-06-06 | Bartolo Colon | R | 29 | W 0-7 | vs CLE | 12 | 223 | L | 4.1 | 9 | 7 | 7 | 1 | 3 | 1 | 89 | 32 | 57 | 64% | 4-4 | 6.00 | 1.57 |
| 2004-06-08 | Kelvim Escobar | R | 28 | W 0-1 | vs MIL | 11 | 112 | - | 8.0 | 4 | 0 | 0 | 0 | 1 | 11 | 108 | 37 | 71 | 66% | 4-2 | 3.36 | 1.25 |
| 2004-06-09 | Jarrod Washburn | L | 30 | W 2-12 | vs MIL | 12 | 141 | L | 5.0 | 8 | 6 | 6 | 0 | 1 | 3 | 109 | 39 | 70 | 64% | 7-3 | 5.63 | 1.53 |
| 2004-06-10 | Aaron Sele | R | 34 | L 5-4 | vs MIL | 8 | 300 | - | 6.0 | 5 | 4 | 4 | 1 | 1 | 0 | 80 | 29 | 51 | 64% | 4-0 | 3.54 | 1.38 |
| 2004-06-11 | John Lackey | R | 26 | L 3-2 | vs CHN | 12 | 63 | W | 7.0 | 7 | 2 | 2 | 0 | 1 | 6 | 103 | 27 | 76 | 74% | 4-7 | 5.35 | 1.39 |
| 2004-06-12 | Bartolo Colon | R | 29 | W 5-10 | vs CHN | 13 | 224 | L | 6.0 | 9 | 6 | 6 | 3 | 2 | 3 | 107 | 35 | 72 | 67% | 4-5 | 6.24 | 1.59 |
| 2004-06-13 | Kelvim Escobar | R | 28 | W 5-6 | vs CHN | 12 | 113 | - | 7.0 | 5 | 2 | 2 | 1 | 1 | 3 | 101 | 34 | 67 | 66% | 4-2 | 3.28 | 1.22 |
| 2004-06-15 | Jarrod Washburn | L | 30 | W 4-2 | @ PIT | 13 | 142 | - | 6.0 | 3 | 1 | 1 | 1 | 0 | 4 | 92 | 27 | 65 | 71% | 7-3 | 5.31 | 1.45 |
| 2004-06-16 | John Lackey | R | 26 | L 3-5 | @ PIT | 13 | 64 | L | 6.0 | 8 | 5 | 5 | 1 | 0 | 4 | 89 | 29 | 60 | 67% | 4-8 | 5.51 | 1.39 |
| 2004-06-17 | Bartolo Colon | R | 29 | L 2-5 | @ PIT | 14 | 225 | L | 7.0 | 8 | 3 | 3 | 3 | 2 | 4 | 96 | 33 | 63 | 66% | 4-6 | 6.04 | 1.57 |
| 2004-06-18 | Kelvim Escobar | R | 28 | L 0-5 | @ HOU | 13 | 114 | L | 5.2 | 7 | 4 | 4 | 0 | 7 | 6 | 116 | 53 | 63 | 54% | 4-3 | 3.49 | 1.30 |
| 2004-06-19 | Ramon Ortiz | R | 31 | W 6-4 | @ HOU | 6 | 129 | W | 6.0 | 3 | 0 | 0 | 0 | 2 | 5 | 72 | 22 | 50 | 69% | 3-5 | 4.68 | 1.48 |
| 2004-06-20 | Jarrod Washburn | L | 30 | L 1-3 | @ HOU | 14 | 143 | - | 2.0 | 1 | 0 | 0 | 0 | 0 | 0 | 24 | 9 | 15 | 63% | 7-3 | 5.18 | 1.43 |
| 2004-06-21 | John Lackey | R | 26 | L 10-3 | vs OAK | 14 | 65 | W | 8.0 | 7 | 2 | 2 | 0 | 0 | 4 | 108 | 33 | 75 | 69% | 5-8 | 5.22 | 1.34 |
| 2004-06-22 | Bartolo Colon | R | 29 | L 6-1 | vs OAK | 15 | 226 | W | 7.2 | 5 | 1 | 1 | 0 | 0 | 6 | 116 | 41 | 75 | 65% | 5-6 | 5.60 | 1.49 |
| 2004-06-23 | Kelvim Escobar | R | 28 | W 1-7 | vs OAK | 14 | 115 | L | 6.0 | 6 | 3 | 3 | 0 | 3 | 6 | 108 | 44 | 64 | 59% | 4-4 | 3.56 | 1.31 |
| 2004-06-24 | Ramon Ortiz | R | 31 | W 1-2 | vs OAK | 7 | 130 | - | 5.1 | 3 | 1 | 1 | 0 | 1 | 5 | 91 | 25 | 66 | 73% | 3-5 | 4.42 | 1.42 |
| 2004-06-25 | Jarrod Washburn | L | 30 | W 13-0 | @ LAN | 15 | 144 | W | 7.0 | 3 | 0 | 0 | 0 | 1 | 3 | 91 | 31 | 60 | 66% | 8-3 | 4.76 | 1.36 |
| 2004-06-26 | Aaron Sele | R | 34 | W 7-5 | @ LAN | 9 | 301 | - | 4.0 | 6 | 5 | 4 | 1 | 1 | 1 | 60 | 20 | 40 | 67% | 4-0 | 3.90 | 1.40 |
| 2004-06-27 | Bartolo Colon | R | 29 | L 5-10 | @ LAN | 16 | 227 | L | 3.2 | 8 | 8 | 8 | 2 | 4 | 3 | 87 | 37 | 50 | 57% | 5-7 | 6.19 | 1.57 |
| 2004-06-29 | Kelvim Escobar | R | 28 | L 4-5 | @ OAK | 15 | 116 | - | 6.0 | 7 | 3 | 3 | 0 | 4 | 5 | 99 | 39 | 60 | 61% | 4-4 | 3.62 | 1.35 |
| 2004-06-30 | John Lackey | R | 26 | L 2-4 | @ OAK | 15 | 66 | - | 6.0 | 7 | 2 | 2 | 0 | 2 | 2 | 100 | 38 | 62 | 62% | 5-8 | 5.02 | 1.35 |
| 2004-07-01 | Jarrod Washburn | L | 30 | L 3-7 | @ OAK | 16 | 145 | L | 5.1 | 9 | 6 | 6 | 4 | 2 | 2 | 97 | 39 | 58 | 60% | 8-4 | 5.09 | 1.40 |
| 2004-07-02 | Aaron Sele | R | 34 | L 7-3 | vs LAN | 10 | 302 | W | 7.0 | 3 | 3 | 3 | 2 | 1 | 5 | 86 | 26 | 60 | 70% | 5-0 | 3.90 | 1.31 |
| 2004-07-03 | Bartolo Colon | R | 29 | W 5-8 | vs LAN | 17 | 228 | L | 4.0 | 8 | 7 | 7 | 3 | 1 | 0 | 68 | 21 | 47 | 69% | 5-8 | 6.59 | 1.60 |
| 2004-07-04 | Kelvim Escobar | R | 28 | W 2-6 | vs LAN | 16 | 117 | L | 6.1 | 4 | 6 | 6 | 0 | 2 | 3 | 108 | 39 | 69 | 64% | 4-5 | 3.95 | 1.33 |
| 2004-07-06 | John Lackey | R | 26 | W 6-2 | @ CHA | 16 | 67 | W | 7.0 | 4 | 2 | 2 | 1 | 1 | 5 | 97 | 36 | 61 | 63% | 6-8 | 4.85 | 1.30 |
| 2004-07-07 | Jarrod Washburn | L | 30 | W 12-0 | @ CHA | 17 | 146 | W | 9.0 | 4 | 0 | 0 | 0 | 2 | 6 | 120 | 38 | 82 | 68% | 9-4 | 4.63 | 1.34 |
| 2004-07-08 | Aaron Sele | R | 34 | L 8-9 | @ CHA | 11 | 303 | - | 5.0 | 8 | 5 | 5 | 1 | 2 | 1 | 90 | 35 | 55 | 61% | 5-0 | 4.25 | 1.36 |
| 2004-07-09 | Bartolo Colon | R | 29 | W 5-4 | @ TOR | 18 | 229 | W | 7.0 | 5 | 4 | 3 | 1 | 0 | 4 | 90 | 29 | 61 | 68% | 6-8 | 6.40 | 1.54 |
| 2004-07-10 | Kelvim Escobar | R | 28 | W 11-2 | @ TOR | 17 | 118 | W | 5.1 | 5 | 2 | 2 | 0 | 3 | 9 | 115 | 49 | 66 | 57% | 5-5 | 3.89 | 1.33 |
| 2004-07-11 | John Lackey | R | 26 | W 5-2 | @ TOR | 17 | 68 | W | 5.2 | 6 | 2 | 2 | 1 | 0 | 5 | 105 | 38 | 67 | 64% | 7-8 | 4.75 | 1.29 |
| 2004-07-15 | Jarrod Washburn | L | 30 | L 8-1 | vs BOS | 18 | 147 | W | 7.0 | 3 | 1 | 0 | 0 | 2 | 3 | 97 | 40 | 57 | 59% | 10-4 | 4.33 | 1.30 |
| 2004-07-16 | Kelvim Escobar | R | 28 | W 2-4 | vs BOS | 18 | 119 | L | 6.0 | 8 | 3 | 3 | 1 | 3 | 6 | 101 | 39 | 62 | 61% | 5-6 | 3.93 | 1.35 |
| 2004-07-17 | Bartolo Colon | R | 29 | L 8-3 | vs BOS | 19 | 230 | W | 6.0 | 3 | 1 | 1 | 1 | 5 | 1 | 92 | 38 | 54 | 59% | 7-8 | 6.14 | 1.53 |
| 2004-07-18 | John Lackey | R | 26 | W 2-6 | vs BOS | 18 | 69 | L | 6.0 | 7 | 5 | 5 | 2 | 2 | 7 | 99 | 39 | 60 | 61% | 7-9 | 4.89 | 1.30 |
| 2004-07-19 | Aaron Sele | R | 34 | W 5-8 | vs CLE | 12 | 304 | - | 4.1 | 7 | 4 | 4 | 2 | 3 | 1 | 81 | 34 | 47 | 58% | 5-0 | 4.50 | 1.42 |
| 2004-07-20 | Jarrod Washburn | L | 30 | W 5-14 | vs CLE | 19 | 148 | L | 5.1 | 13 | 10 | 9 | 4 | 1 | 1 | 99 | 35 | 64 | 65% | 10-5 | 4.82 | 1.35 |
| 2004-07-21 | Kelvim Escobar | R | 28 | L 2-3 | @ TEX | 19 | 120 | L | 6.2 | 5 | 3 | 3 | 1 | 3 | 8 | 111 | 41 | 70 | 63% | 5-7 | 3.96 | 1.35 |
| 2004-07-22 | Bartolo Colon | R | 29 | W 11-1 | @ TEX | 20 | 231 | W | 7.0 | 3 | 1 | 1 | 0 | 3 | 6 | 105 | 41 | 64 | 61% | 8-8 | 5.85 | 1.49 |
| 2004-07-23 | John Lackey | R | 26 | W 8-2 | @ SEA | 19 | 70 | W | 5.1 | 9 | 2 | 2 | 0 | 2 | 4 | 95 | 36 | 59 | 62% | 8-9 | 4.84 | 1.34 |
| 2004-07-24 | Aaron Sele | R | 34 | W 8-4 | @ SEA | 13 | 305 | W | 6.0 | 5 | 3 | 2 | 0 | 3 | 0 | 127 | 61 | 66 | 52% | 6-0 | 4.39 | 1.41 |
| 2004-07-25 | Ramon Ortiz | R | 31 | L 2-6 | @ SEA | 8 | 131 | L | 7.0 | 6 | 3 | 3 | 2 | 1 | 2 | 95 | 32 | 63 | 66% | 3-6 | 4.07 | 1.33 |
| 2004-07-26 | Kelvim Escobar | R | 28 | W 1-6 | vs TEX | 20 | 121 | L | 7.1 | 8 | 6 | 6 | 2 | 3 | 8 | 117 | 45 | 72 | 62% | 5-8 | 4.14 | 1.35 |
| 2004-07-27 | Bartolo Colon | R | 29 | L 2-0 | vs TEX | 21 | 232 | W | 7.0 | 1 | 0 | 0 | 0 | 2 | 8 | 95 | 36 | 59 | 62% | 9-8 | 5.52 | 1.43 |
| 2004-07-28 | John Lackey | R | 26 | L 2-0 | vs TEX | 20 | 71 | W | 8.1 | 3 | 0 | 0 | 0 | 1 | 7 | 105 | 31 | 74 | 70% | 9-9 | 4.54 | 1.28 |
| 2004-07-29 | Aaron Sele | R | 34 | W 5-6 | vs SEA | 14 | 306 | - | 5.0 | 9 | 5 | 5 | 1 | 2 | 3 | 93 | 29 | 64 | 69% | 6-0 | 4.66 | 1.46 |
| 2004-07-30 | Ramon Ortiz | R | 31 | L 6-5 | vs SEA | 9 | 132 | - | 7.0 | 4 | 2 | 2 | 0 | 1 | 4 | 96 | 36 | 60 | 63% | 3-6 | 3.94 | 1.28 |
| 2004-07-31 | Kelvim Escobar | R | 28 | L 9-8 | vs SEA | 21 | 122 | - | 6.0 | 9 | 6 | 6 | 2 | 1 | 4 | 106 | 36 | 70 | 66% | 5-8 | 4.36 | 1.37 |
| 2004-08-01 | Bartolo Colon | R | 29 | L 3-2 | vs SEA | 22 | 233 | W | 6.0 | 8 | 2 | 2 | 1 | 3 | 6 | 110 | 45 | 65 | 59% | 10-8 | 5.40 | 1.45 |
| 2004-08-03 | John Lackey | R | 26 | L 0-10 | @ MIN | 21 | 72 | L | 5.2 | 7 | 7 | 7 | 2 | 3 | 6 | 114 | 48 | 66 | 58% | 9-10 | 4.80 | 1.30 |
| 2004-08-04 | Ramon Ortiz | R | 31 | L 3-6 | @ MIN | 10 | 133 | L | 6.2 | 11 | 6 | 6 | 2 | 0 | 2 | 90 | 30 | 60 | 67% | 3-7 | 4.24 | 1.30 |
| 2004-08-05 | Aaron Sele | R | 34 | W 8-3 | @ MIN | 15 | 307 | W | 7.0 | 5 | 3 | 3 | 1 | 2 | 1 | 95 | 37 | 58 | 61% | 7-0 | 4.60 | 1.43 |
| 2004-08-06 | Kelvim Escobar | R | 28 | W 3-0 | @ KCA | 22 | 123 | W | 7.0 | 7 | 0 | 0 | 0 | 1 | 9 | 107 | 31 | 76 | 71% | 6-8 | 4.14 | 1.36 |
| 2004-08-07 | Bartolo Colon | R | 29 | W 7-5 | @ KCA | 23 | 234 | W | 6.0 | 8 | 4 | 4 | 0 | 0 | 7 | 103 | 35 | 68 | 66% | 11-8 | 5.43 | 1.44 |
| 2004-08-08 | John Lackey | R | 26 | W 6-4 | @ KCA | 22 | 73 | - | 6.2 | 11 | 4 | 4 | 1 | 1 | 4 | 101 | 34 | 67 | 66% | 9-10 | 4.82 | 1.32 |
| 2004-08-09 | Ramon Ortiz | R | 31 | W 5-3 | @ KCA | 11 | 134 | - | 7.0 | 6 | 2 | 2 | 1 | 2 | 3 | 103 | 33 | 70 | 68% | 3-7 | 4.12 | 1.29 |
| 2004-08-10 | Aaron Sele | R | 34 | W 3-11 | vs BAL | 16 | 308 | L | 4.2 | 13 | 6 | 4 | 1 | 3 | 2 | 103 | 37 | 66 | 64% | 7-1 | 4.73 | 1.52 |
| 2004-08-11 | Kelvim Escobar | R | 28 | L 4-2 | vs BAL | 23 | 124 | W | 7.0 | 6 | 1 | 1 | 0 | 2 | 7 | 105 | 41 | 64 | 61% | 7-8 | 4.00 | 1.35 |
| 2004-08-12 | Bartolo Colon | R | 29 | W 1-6 | vs BAL | 24 | 235 | L | 5.1 | 8 | 6 | 6 | 1 | 6 | 3 | 105 | 40 | 65 | 62% | 11-9 | 5.58 | 1.48 |
| 2004-08-13 | John Lackey | R | 26 | W 3-5 | vs DET | 23 | 74 | - | 5.1 | 7 | 3 | 3 | 0 | 4 | 7 | 107 | 40 | 67 | 63% | 9-10 | 4.84 | 1.35 |
| 2004-08-14 | Ramon Ortiz | R | 31 | L 11-8 | vs DET | 12 | 135 | - | 4.2 | 8 | 6 | 6 | 2 | 3 | 2 | 89 | 38 | 51 | 57% | 3-7 | 4.50 | 1.35 |
| 2004-08-15 | Aaron Sele | R | 34 | L 3-2 | vs DET | 17 | 309 | - | 6.0 | 6 | 1 | 0 | 0 | 2 | 2 | 92 | 40 | 52 | 57% | 7-1 | 4.46 | 1.50 |
| 2004-08-17 | Kelvim Escobar | R | 28 | L 3-8 | @ TBA | 24 | 125 | L | 4.2 | 6 | 5 | 5 | 1 | 4 | 3 | 112 | 56 | 56 | 50% | 7-9 | 4.20 | 1.38 |
| 2004-08-18 | Bartolo Colon | R | 29 | W 6-4 | @ TBA | 25 | 236 | W | 8.2 | 3 | 2 | 2 | 0 | 3 | 5 | 126 | 44 | 82 | 65% | 12-9 | 5.40 | 1.44 |
| 2004-08-19 | John Lackey | R | 26 | W 10-7 | @ TBA | 24 | 75 | W | 6.2 | 8 | 4 | 4 | 2 | 1 | 8 | 106 | 43 | 63 | 59% | 10-10 | 4.86 | 1.35 |
| 2004-08-20 | Ramon Ortiz | R | 31 | W 5-0 | @ NYA | 13 | 136 | W | 8.0 | 4 | 0 | 0 | 0 | 2 | 6 | 104 | 46 | 58 | 56% | 4-7 | 4.16 | 1.30 |
| 2004-08-21 | Aaron Sele | R | 34 | W 6-1 | @ NYA | 18 | 310 | - | 3.0 | 3 | 1 | 1 | 1 | 1 | 1 | 49 | 23 | 26 | 53% | 7-1 | 4.42 | 1.50 |
| 2004-08-22 | Kelvim Escobar | R | 28 | W 4-3 | @ NYA | 25 | 126 | W | 7.0 | 3 | 2 | 2 | 0 | 4 | 8 | 107 | 42 | 65 | 61% | 8-9 | 4.12 | 1.36 |
| 2004-08-23 | Bartolo Colon | R | 29 | L 9-4 | vs KCA | 26 | 237 | W | 7.2 | 5 | 3 | 3 | 2 | 2 | 6 | 111 | 35 | 76 | 68% | 13-9 | 5.30 | 1.41 |
| 2004-08-24 | John Lackey | R | 26 | L 7-5 | vs KCA | 25 | 76 | W | 5.0 | 7 | 5 | 5 | 1 | 2 | 6 | 90 | 34 | 56 | 62% | 11-10 | 4.99 | 1.36 |
| 2004-08-25 | Ramon Ortiz | R | 31 | L 21-6 | vs KCA | 14 | 137 | W | 6.0 | 12 | 6 | 6 | 2 | 1 | 1 | 89 | 31 | 58 | 65% | 5-7 | 4.42 | 1.35 |
| 2004-08-27 | Aaron Sele | R | 34 | L 9-6 | vs MIN | 19 | 311 | W | 6.0 | 6 | 2 | 2 | 1 | 3 | 1 | 91 | 41 | 50 | 55% | 8-1 | 4.34 | 1.50 |
| 2004-08-28 | Bartolo Colon | R | 29 | W 1-7 | vs MIN | 27 | 238 | L | 6.0 | 8 | 5 | 5 | 1 | 0 | 5 | 95 | 24 | 71 | 75% | 13-10 | 5.38 | 1.41 |
| 2004-08-29 | Kelvim Escobar | R | 28 | L 4-2 | vs MIN | 26 | 127 | - | 7.0 | 4 | 2 | 2 | 1 | 0 | 9 | 97 | 35 | 62 | 64% | 8-9 | 4.06 | 1.33 |
| 2004-08-31 | John Lackey | R | 26 | L 7-10 | @ BOS | 26 | 77 | L | 3.1 | 7 | 6 | 4 | 2 | 3 | 3 | 82 | 36 | 46 | 56% | 11-11 | 5.12 | 1.40 |
| 2004-09-01 | Aaron Sele | R | 34 | L 7-12 | @ BOS | 20 | 312 | L | 3.1 | 10 | 7 | 7 | 0 | 1 | 1 | 67 | 28 | 39 | 58% | 8-2 | 4.77 | 1.56 |
| 2004-09-02 | Bartolo Colon | R | 29 | L 3-4 | @ BOS | 28 | 239 | L | 4.2 | 10 | 4 | 4 | 1 | 4 | 5 | 112 | 51 | 61 | 54% | 13-11 | 5.43 | 1.45 |
| 2004-09-03 | Kelvim Escobar | R | 28 | W 10-5 | @ CLE | 27 | 128 | W | 6.2 | 8 | 4 | 4 | 1 | 4 | 2 | 116 | 44 | 72 | 62% | 9-9 | 4.10 | 1.34 |
| 2004-09-04 | Jarrod Washburn | L | 30 | W 6-1 | @ CLE | 20 | 149 | W | 5.0 | 2 | 1 | 1 | 0 | 1 | 6 | 73 | 27 | 46 | 63% | 11-5 | 4.69 | 1.32 |
| 2004-09-05 | John Lackey | R | 26 | W 2-1 | @ CLE | 27 | 78 | W | 7.1 | 2 | 1 | 0 | 0 | 3 | 5 | 105 | 45 | 60 | 57% | 12-11 | 4.90 | 1.37 |
| 2004-09-07 | Bartolo Colon | R | 29 | L 5-2 | vs TOR | 29 | 240 | W | 7.0 | 6 | 2 | 2 | 1 | 1 | 7 | 112 | 37 | 75 | 67% | 14-11 | 5.32 | 1.43 |
| 2004-09-08 | Kelvim Escobar | R | 28 | W 0-1 | vs TOR | 28 | 129 | L | 8.0 | 5 | 1 | 1 | 0 | 1 | 12 | 115 | 41 | 74 | 64% | 9-10 | 3.97 | 1.32 |
| 2004-09-09 | Jarrod Washburn | L | 30 | W 4-5 | vs TOR | 21 | 150 | L | 6.0 | 5 | 5 | 5 | 1 | 2 | 5 | 94 | 34 | 60 | 64% | 11-6 | 4.82 | 1.31 |
| 2004-09-10 | John Lackey | R | 26 | L 7-5 | vs CHA | 28 | 79 | - | 6.0 | 8 | 2 | 2 | 0 | 3 | 3 | 103 | 42 | 61 | 59% | 12-11 | 4.84 | 1.39 |
| 2004-09-11 | Aaron Sele | R | 34 | W 6-13 | vs CHA | 21 | 313 | L | 1.2 | 6 | 8 | 4 | 0 | 1 | 0 | 46 | 20 | 26 | 57% | 8-3 | 4.99 | 1.59 |
| 2004-09-12 | Bartolo Colon | R | 29 | L 11-0 | vs CHA | 30 | 241 | W | 7.0 | 6 | 0 | 0 | 0 | 1 | 6 | 92 | 30 | 62 | 67% | 15-11 | 5.11 | 1.42 |
| 2004-09-13 | Kelvim Escobar | R | 28 | W 5-1 | @ SEA | 29 | 130 | W | 7.0 | 6 | 1 | 1 | 1 | 1 | 7 | 112 | 43 | 69 | 62% | 10-10 | 3.86 | 1.30 |
| 2004-09-14 | Jarrod Washburn | L | 30 | L 2-3 | @ SEA | 22 | 151 | L | 6.2 | 6 | 2 | 2 | 0 | 3 | 5 | 102 | 41 | 61 | 60% | 11-7 | 4.74 | 1.32 |
| 2004-09-15 | John Lackey | R | 26 | L 0-1 | @ SEA | 29 | 80 | L | 7.2 | 5 | 1 | 1 | 0 | 2 | 10 | 106 | 40 | 66 | 62% | 12-12 | 4.67 | 1.36 |
| 2004-09-16 | Aaron Sele | R | 34 | W 6-1 | @ SEA | 22 | 314 | W | 5.0 | 5 | 1 | 1 | 0 | 5 | 2 | 97 | 43 | 54 | 56% | 9-3 | 4.86 | 1.60 |
| 2004-09-17 | Bartolo Colon | R | 29 | L 9-5 | vs TEX | 31 | 242 | W | 7.0 | 3 | 3 | 3 | 2 | 2 | 7 | 104 | 36 | 68 | 65% | 16-11 | 5.07 | 1.39 |
| 2004-09-18 | Kelvim Escobar | R | 28 | W 0-2 | vs TEX | 30 | 131 | L | 8.0 | 3 | 1 | 1 | 0 | 2 | 7 | 110 | 42 | 68 | 62% | 10-11 | 3.75 | 1.28 |
| 2004-09-19 | Jarrod Washburn | L | 30 | W 0-1 | vs TEX | 23 | 152 | L | 8.0 | 6 | 1 | 0 | 0 | 2 | 3 | 109 | 33 | 76 | 70% | 11-8 | 4.47 | 1.30 |
| 2004-09-20 | John Lackey | R | 26 | L 5-2 | vs SEA | 30 | 81 | W | 6.0 | 10 | 2 | 2 | 0 | 0 | 7 | 102 | 29 | 73 | 72% | 13-12 | 4.62 | 1.37 |
| 2004-09-21 | Aaron Sele | R | 34 | W 3-7 | vs SEA | 23 | 315 | L | 2.1 | 10 | 5 | 5 | 0 | 0 | 1 | 55 | 16 | 39 | 71% | 9-4 | 5.14 | 1.66 |
| 2004-09-22 | Bartolo Colon | R | 29 | W 6-16 | vs SEA | 32 | 243 | L | 3.2 | 10 | 7 | 7 | 0 | 3 | 0 | 80 | 30 | 50 | 63% | 16-12 | 5.32 | 1.44 |
| 2004-09-24 | Kelvim Escobar | R | 28 | W 3-6 | vs OAK | 31 | 132 | L | 5.0 | 7 | 5 | 5 | 1 | 3 | 6 | 97 | 41 | 56 | 58% | 10-12 | 3.88 | 1.29 |
| 2004-09-25 | Jarrod Washburn | L | 30 | L 5-3 | vs OAK | 24 | 153 | - | 6.0 | 5 | 3 | 3 | 1 | 2 | 4 | 100 | 39 | 61 | 61% | 11-8 | 4.47 | 1.30 |
| 2004-09-26 | John Lackey | R | 26 | L 6-2 | vs OAK | 31 | 82 | W | 7.0 | 4 | 2 | 2 | 0 | 2 | 3 | 101 | 41 | 60 | 59% | 14-12 | 4.55 | 1.36 |
| 2004-09-27 | Bartolo Colon | R | 29 | W 5-3 | @ TEX | 33 | 244 | W | 8.0 | 4 | 3 | 2 | 1 | 2 | 4 | 103 | 31 | 72 | 70% | 17-12 | 5.19 | 1.41 |
| 2004-09-28 | Kelvim Escobar | R | 28 | W 8-2 | @ TEX | 32 | 133 | W | 6.0 | 3 | 2 | 2 | 1 | 1 | 3 | 84 | 33 | 51 | 61% | 11-12 | 3.86 | 1.28 |
| 2004-09-29 | Jarrod Washburn | L | 30 | W 8-7 | @ TEX | 25 | 154 | - | 4.0 | 9 | 5 | 5 | 0 | 2 | 1 | 76 | 36 | 40 | 53% | 11-8 | 4.65 | 1.34 |
| 2004-09-30 | John Lackey | R | 26 | L 3-6 | @ TEX | 32 | 83 | L | 4.1 | 7 | 5 | 5 | 0 | 5 | 7 | 105 | 45 | 60 | 57% | 14-13 | 4.68 | 1.39 |
| 2004-10-01 | Bartolo Colon | R | 29 | W 10-0 | @ OAK | 34 | 245 | W | 7.0 | 3 | 0 | 0 | 0 | 0 | 6 | 90 | 33 | 57 | 63% | 18-12 | 5.02 | 1.38 |
| 2004-10-02 | Kelvim Escobar | R | 28 | W 5-4 | @ OAK | 33 | 134 | - | 5.1 | 6 | 4 | 4 | 0 | 3 | 6 | 99 | 39 | 60 | 61% | 11-12 | 3.94 | 1.29 |
| 2004-10-03 | Aaron Sele | R | 34 | L 2-3 | @ OAK | 24 | 316 | - | 6.0 | 5 | 2 | 2 | 0 | 0 | 1 | 71 | 26 | 45 | 63% | 9-4 | 5.05 | 1.62 |