| West | W | L | Pct | GB |
| LA Dodgers | 93 | 69 | .574 | -- |
| SF Giants | 91 | 71 | .562 | 2.0 |
| San Diego | 87 | 75 | .537 | 6.0 |
| Colorado | 68 | 94 | .420 | 25.0 |
| Arizona | 51 | 111 | .315 | 42.0 |
| 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 |
| 2004-04-05 | Brian Lawrence | R | 28 | W 8-2 | @ LAN | 1 | 80 | W | 5.0 | 8 | 1 | 1 | 1 | 2 | 3 | 91 | 36 | 55 | 60% | 1-0 | 1.80 | 2.00 |
| 2004-04-06 | Jake Peavy | R | 23 | L 4-5 | @ LAN | 1 | 50 | - | 5.1 | 7 | 2 | 2 | 0 | 0 | 3 | 82 | 24 | 58 | 71% | 0-0 | 3.60 | 1.40 |
| 2004-04-07 | Adam Eaton | R | 26 | L 1-2 | @ LAN | 1 | 77 | - | 8.0 | 4 | 1 | 1 | 0 | 1 | 3 | 101 | 30 | 71 | 70% | 0-0 | 1.13 | 0.63 |
| 2004-04-08 | David Wells | L | 41 | L 4-3 | vs SFN | 1 | 387 | - | 7.0 | 4 | 0 | 0 | 0 | 1 | 0 | 95 | 36 | 59 | 62% | 0-0 | 0.00 | 0.71 |
| 2004-04-10 | Brian Lawrence | R | 28 | L 6-4 | vs SFN | 2 | 81 | - | 6.0 | 6 | 4 | 4 | 0 | 4 | 2 | 73 | 32 | 41 | 56% | 1-0 | 4.09 | 1.82 |
| 2004-04-11 | Jake Peavy | R | 23 | W 3-6 | vs SFN | 2 | 51 | - | 7.0 | 6 | 0 | 0 | 0 | 2 | 4 | 98 | 34 | 64 | 65% | 0-0 | 1.50 | 1.25 |
| 2004-04-13 | Adam Eaton | R | 26 | L 8-3 | vs LAN | 2 | 78 | W | 7.0 | 6 | 2 | 2 | 1 | 0 | 6 | 91 | 28 | 63 | 69% | 1-0 | 1.80 | 0.73 |
| 2004-04-14 | David Wells | L | 41 | W 4-11 | vs LAN | 2 | 388 | L | 4.0 | 10 | 8 | 8 | 0 | 1 | 1 | 91 | 31 | 60 | 66% | 0-1 | 6.55 | 1.45 |
| 2004-04-15 | Brian Lawrence | R | 28 | W 5-7 | vs LAN | 3 | 82 | L | 5.1 | 9 | 5 | 5 | 0 | 3 | 5 | 95 | 29 | 66 | 69% | 1-1 | 5.63 | 2.00 |
| 2004-04-16 | Jake Peavy | R | 23 | W 0-5 | vs ARI | 3 | 52 | L | 5.0 | 4 | 2 | 2 | 0 | 4 | 6 | 105 | 44 | 61 | 58% | 0-1 | 2.12 | 1.35 |
| 2004-04-17 | Ismael Valdez | R | 31 | L 3-2 | vs ARI | 1 | 251 | W | 6.0 | 5 | 2 | 2 | 1 | 1 | 1 | 79 | 28 | 51 | 65% | 1-0 | 4.00 | 1.22 |
| 2004-04-18 | Adam Eaton | R | 26 | L 6-5 | vs ARI | 3 | 79 | - | 6.0 | 5 | 3 | 3 | 1 | 3 | 5 | 107 | 37 | 70 | 65% | 1-0 | 2.57 | 0.90 |
| 2004-04-19 | David Wells | L | 41 | L 3-4 | @ SFN | 3 | 389 | L | 6.0 | 7 | 4 | 4 | 2 | 1 | 1 | 80 | 29 | 51 | 64% | 0-2 | 6.35 | 1.41 |
| 2004-04-20 | Brian Lawrence | R | 28 | W 9-5 | @ SFN | 4 | 83 | W | 5.0 | 7 | 4 | 4 | 2 | 3 | 4 | 67 | 30 | 37 | 55% | 2-1 | 6.00 | 2.00 |
| 2004-04-21 | Jake Peavy | R | 23 | W 11-0 | @ SFN | 4 | 53 | W | 6.0 | 4 | 0 | 0 | 0 | 4 | 4 | 97 | 48 | 49 | 51% | 1-1 | 1.57 | 1.35 |
| 2004-04-22 | Ismael Valdez | R | 31 | W 9-4 | @ SFN | 2 | 252 | W | 5.2 | 6 | 4 | 2 | 1 | 2 | 1 | 95 | 37 | 58 | 61% | 2-0 | 3.86 | 1.36 |
| 2004-04-23 | Adam Eaton | R | 26 | L 2-5 | @ ARI | 4 | 80 | L | 7.2 | 9 | 5 | 4 | 1 | 1 | 3 | 106 | 35 | 71 | 67% | 1-1 | 3.10 | 1.00 |
| 2004-04-24 | David Wells | L | 41 | W 4-2 | @ ARI | 4 | 390 | - | 6.0 | 5 | 2 | 2 | 1 | 2 | 2 | 80 | 29 | 51 | 64% | 0-2 | 5.48 | 1.35 |
| 2004-04-25 | Brian Lawrence | R | 28 | L 7-12 | @ ARI | 5 | 84 | L | 4.0 | 7 | 4 | 0 | 1 | 1 | 3 | 77 | 28 | 49 | 64% | 2-2 | 5.04 | 2.00 |
| 2004-04-26 | Jake Peavy | R | 23 | L 3-2 | vs MON | 5 | 54 | - | 5.2 | 7 | 2 | 2 | 0 | 1 | 7 | 99 | 34 | 65 | 66% | 1-1 | 1.86 | 1.34 |
| 2004-04-27 | Ismael Valdez | R | 31 | L 3-0 | vs MON | 3 | 253 | W | 8.0 | 4 | 0 | 0 | 0 | 0 | 2 | 112 | 36 | 76 | 68% | 3-0 | 2.45 | 1.05 |
| 2004-04-28 | Adam Eaton | R | 26 | L 5-4 | vs MON | 5 | 81 | - | 5.0 | 10 | 4 | 4 | 1 | 0 | 5 | 89 | 24 | 65 | 73% | 1-1 | 3.71 | 1.15 |
| 2004-04-29 | David Wells | L | 41 | L 2-1 | vs MON | 5 | 391 | W | 7.0 | 2 | 1 | 0 | 0 | 0 | 3 | 83 | 20 | 63 | 76% | 1-2 | 4.20 | 1.10 |
| 2004-04-30 | Brian Lawrence | R | 28 | L 7-6 | vs NYN | 6 | 85 | W | 5.0 | 9 | 5 | 5 | 0 | 1 | 2 | 96 | 32 | 64 | 67% | 3-2 | 5.70 | 2.00 |
| 2004-05-01 | Jake Peavy | R | 23 | L 3-1 | vs NYN | 6 | 55 | W | 6.0 | 8 | 1 | 1 | 0 | 2 | 7 | 104 | 36 | 68 | 65% | 2-1 | 1.80 | 1.40 |
| 2004-05-02 | Ismael Valdez | R | 31 | W 2-6 | vs NYN | 4 | 254 | L | 5.0 | 7 | 5 | 5 | 0 | 2 | 1 | 87 | 31 | 56 | 64% | 3-1 | 3.67 | 1.19 |
| 2004-05-04 | Adam Eaton | R | 26 | L 2-4 | @ ATL | 6 | 82 | L | 7.0 | 6 | 4 | 2 | 0 | 1 | 4 | 102 | 31 | 71 | 70% | 1-2 | 3.51 | 1.12 |
| 2004-05-05 | David Wells | L | 41 | W 2-0 | @ ATL | 6 | 392 | W | 7.0 | 5 | 0 | 0 | 0 | 0 | 6 | 83 | 23 | 60 | 72% | 2-2 | 3.41 | 1.03 |
| 2004-05-06 | Brian Lawrence | R | 28 | W 7-3 | @ ATL | 7 | 86 | W | 7.0 | 5 | 2 | 2 | 1 | 1 | 8 | 94 | 27 | 67 | 71% | 4-2 | 5.11 | 1.78 |
| 2004-05-07 | Jake Peavy | R | 23 | L 1-3 | @ FLO | 7 | 56 | L | 6.2 | 7 | 2 | 2 | 2 | 1 | 8 | 93 | 31 | 62 | 67% | 2-2 | 1.93 | 1.36 |
| 2004-05-08 | Ismael Valdez | R | 31 | W 6-3 | @ FLO | 5 | 255 | - | 5.0 | 5 | 3 | 3 | 1 | 3 | 3 | 90 | 38 | 52 | 58% | 3-1 | 3.94 | 1.25 |
| 2004-05-09 | Adam Eaton | R | 26 | L 4-7 | @ FLO | 7 | 83 | L | 1.2 | 6 | 6 | 6 | 2 | 2 | 4 | 79 | 30 | 49 | 62% | 1-3 | 4.71 | 1.29 |
| 2004-05-11 | David Wells | L | 41 | W 3-6 | vs CIN | 7 | 393 | L | 7.0 | 5 | 4 | 4 | 2 | 2 | 1 | 115 | 50 | 65 | 57% | 2-3 | 3.68 | 1.02 |
| 2004-05-12 | Brian Lawrence | R | 28 | L 2-1 | vs CIN | 8 | 87 | W | 6.0 | 7 | 1 | 1 | 0 | 1 | 4 | 102 | 36 | 66 | 65% | 5-2 | 4.60 | 1.72 |
| 2004-05-13 | Jake Peavy | R | 23 | L 8-2 | vs CIN | 8 | 57 | W | 6.0 | 6 | 2 | 2 | 0 | 4 | 5 | 113 | 41 | 72 | 64% | 3-2 | 2.06 | 1.40 |
| 2004-05-14 | Ismael Valdez | R | 31 | W 1-6 | vs CHN | 6 | 256 | L | 7.0 | 7 | 3 | 3 | 2 | 0 | 2 | 79 | 22 | 57 | 72% | 3-2 | 3.92 | 1.21 |
| 2004-05-15 | Adam Eaton | R | 26 | W 5-7 | vs CHN | 8 | 84 | L | 5.0 | 9 | 7 | 7 | 3 | 2 | 4 | 88 | 36 | 52 | 59% | 1-4 | 5.55 | 1.38 |
| 2004-05-16 | David Wells | L | 41 | W 2-4 | vs CHN | 8 | 394 | L | 6.0 | 8 | 3 | 3 | 1 | 0 | 2 | 89 | 29 | 60 | 67% | 2-4 | 3.78 | 1.06 |
| 2004-05-19 | Brian Lawrence | R | 28 | W 6-3 | @ PIT | 9 | 88 | W | 6.0 | 8 | 3 | 3 | 1 | 2 | 4 | 97 | 37 | 60 | 62% | 6-2 | 4.59 | 1.71 |
| 2004-05-19 | Jake Peavy | R | 23 | W 7-3 | @ PIT | 9 | 58 | W | 6.0 | 5 | 1 | 1 | 0 | 1 | 9 | 89 | 34 | 55 | 62% | 4-2 | 2.00 | 1.35 |
| 2004-05-20 | Ismael Valdez | R | 31 | L 7-9 | @ PIT | 7 | 257 | - | 5.0 | 10 | 7 | 5 | 3 | 1 | 5 | 87 | 29 | 58 | 67% | 3-2 | 4.50 | 1.32 |
| 2004-05-21 | Adam Eaton | R | 26 | L 4-5 | @ PHI | 9 | 85 | - | 6.0 | 4 | 2 | 2 | 1 | 1 | 5 | 92 | 29 | 63 | 68% | 1-4 | 5.26 | 1.32 |
| 2004-05-22 | Justin Germano | R | 22 | W 9-6 | @ PHI | 1 | 1 | W | 5.0 | 5 | 4 | 4 | 1 | 4 | 5 | 95 | 41 | 54 | 57% | 1-0 | 7.20 | 1.80 |
| 2004-05-23 | Brian Lawrence | R | 28 | L 4-6 | @ PHI | 10 | 89 | L | 5.0 | 5 | 4 | 4 | 2 | 4 | 2 | 86 | 32 | 54 | 63% | 6-3 | 4.83 | 1.72 |
| 2004-05-25 | Ismael Valdez | R | 31 | W 11-6 | @ COL | 8 | 258 | - | 3.0 | 9 | 6 | 6 | 1 | 3 | 1 | 86 | 35 | 51 | 59% | 3-2 | 5.36 | 1.49 |
| 2004-05-26 | Adam Eaton | R | 27 | L 6-13 | @ COL | 10 | 86 | L | 6.0 | 10 | 8 | 8 | 2 | 2 | 4 | 106 | 32 | 74 | 70% | 1-5 | 5.95 | 1.39 |
| 2004-05-27 | Justin Germano | R | 22 | W 4-3 | @ COL | 2 | 2 | - | 6.0 | 3 | 2 | 0 | 0 | 5 | 3 | 104 | 44 | 60 | 58% | 1-0 | 3.27 | 1.55 |
| 2004-05-28 | Brian Lawrence | R | 28 | W 5-3 | @ MIL | 11 | 90 | W | 7.0 | 4 | 2 | 1 | 1 | 0 | 10 | 98 | 28 | 70 | 71% | 7-3 | 4.43 | 1.59 |
| 2004-05-29 | Dennis Tankersley | R | 25 | L 3-4 | @ MIL | 1 | 11 | L | 6.0 | 3 | 3 | 0 | 0 | 2 | 9 | 102 | 34 | 68 | 67% | 0-1 | 2.00 | 1.22 |
| 2004-05-30 | Ismael Valdez | R | 31 | W 5-2 | @ MIL | 9 | 259 | W | 6.0 | 9 | 2 | 2 | 0 | 2 | 1 | 93 | 28 | 65 | 70% | 4-2 | 5.09 | 1.53 |
| 2004-05-31 | Adam Eaton | R | 27 | W 1-7 | vs COL | 11 | 87 | L | 6.1 | 7 | 4 | 4 | 0 | 2 | 7 | 101 | 32 | 69 | 68% | 1-6 | 5.86 | 1.38 |
| 2004-06-01 | Justin Germano | R | 22 | W 1-7 | vs COL | 3 | 3 | L | 2.2 | 5 | 7 | 6 | 0 | 2 | 1 | 53 | 21 | 32 | 60% | 1-1 | 6.43 | 1.71 |
| 2004-06-02 | Brian Lawrence | R | 28 | L 2-1 | vs COL | 12 | 91 | - | 7.1 | 5 | 1 | 1 | 0 | 0 | 1 | 85 | 29 | 56 | 66% | 7-3 | 4.04 | 1.48 |
| 2004-06-04 | Dennis Tankersley | R | 25 | W 1-3 | vs MIL | 2 | 12 | L | 6.1 | 6 | 3 | 2 | 0 | 3 | 5 | 95 | 42 | 53 | 56% | 0-2 | 2.40 | 1.33 |
| 2004-06-05 | Ismael Valdez | R | 31 | L 4-0 | vs MIL | 10 | 260 | W | 9.0 | 4 | 0 | 0 | 0 | 0 | 4 | 98 | 27 | 71 | 72% | 5-2 | 4.35 | 1.37 |
| 2004-06-06 | Adam Eaton | R | 27 | L 8-3 | vs MIL | 12 | 88 | W | 6.0 | 3 | 2 | 2 | 0 | 1 | 5 | 88 | 24 | 64 | 73% | 2-6 | 5.63 | 1.32 |
| 2004-06-08 | David Wells | L | 41 | L 0-1 | @ BOS | 9 | 395 | - | 5.2 | 6 | 0 | 0 | 0 | 0 | 2 | 81 | 26 | 55 | 68% | 2-4 | 3.38 | 1.05 |
| 2004-06-09 | Brian Lawrence | R | 28 | W 8-1 | @ BOS | 13 | 92 | W | 5.0 | 5 | 0 | 0 | 0 | 0 | 5 | 71 | 23 | 48 | 68% | 8-3 | 3.77 | 1.45 |
| 2004-06-10 | Ismael Valdez | R | 31 | L 3-9 | @ BOS | 11 | 261 | L | 4.0 | 6 | 6 | 6 | 2 | 2 | 3 | 77 | 24 | 53 | 69% | 5-3 | 4.91 | 1.41 |
| 2004-06-11 | Adam Eaton | R | 27 | W 10-2 | @ NYA | 13 | 89 | W | 7.0 | 4 | 2 | 2 | 1 | 3 | 4 | 107 | 40 | 67 | 63% | 3-6 | 5.35 | 1.29 |
| 2004-06-12 | Dennis Tankersley | R | 25 | L 2-3 | @ NYA | 3 | 13 | L | 5.0 | 6 | 3 | 3 | 0 | 1 | 3 | 77 | 36 | 41 | 53% | 0-3 | 3.15 | 1.35 |
| 2004-06-13 | David Wells | L | 41 | L 5-6 | @ NYA | 10 | 396 | - | 7.0 | 5 | 0 | 0 | 0 | 0 | 4 | 81 | 27 | 54 | 67% | 2-4 | 3.00 | 1.02 |
| 2004-06-15 | Brian Lawrence | R | 28 | W 2-5 | vs TBA | 14 | 93 | L | 5.0 | 8 | 5 | 5 | 1 | 1 | 4 | 84 | 32 | 52 | 62% | 8-4 | 4.10 | 1.47 |
| 2004-06-16 | Ismael Valdez | R | 31 | W 6-9 | vs TBA | 12 | 262 | - | 6.0 | 6 | 3 | 3 | 0 | 0 | 2 | 77 | 19 | 58 | 75% | 5-3 | 4.88 | 1.38 |
| 2004-06-17 | Adam Eaton | R | 27 | W 1-4 | vs TBA | 14 | 90 | L | 6.0 | 2 | 2 | 1 | 1 | 2 | 1 | 92 | 34 | 58 | 63% | 3-7 | 5.08 | 1.25 |
| 2004-06-18 | David Wells | L | 41 | W 2-3 | vs TOR | 11 | 397 | L | 8.0 | 5 | 3 | 3 | 1 | 0 | 3 | 97 | 27 | 70 | 72% | 2-5 | 3.04 | 0.97 |
| 2004-06-19 | Dennis Tankersley | R | 25 | L 3-2 | vs TOR | 4 | 14 | - | 5.0 | 4 | 2 | 2 | 0 | 2 | 1 | 87 | 33 | 54 | 62% | 0-3 | 3.24 | 1.32 |
| 2004-06-20 | Brian Lawrence | R | 28 | W 0-3 | vs TOR | 15 | 94 | L | 8.0 | 8 | 2 | 2 | 1 | 0 | 6 | 101 | 33 | 68 | 67% | 8-5 | 3.93 | 1.43 |
| 2004-06-21 | Ismael Valdez | R | 31 | L 3-1 | vs ARI | 13 | 263 | W | 7.0 | 7 | 1 | 1 | 0 | 3 | 2 | 93 | 35 | 58 | 62% | 6-3 | 4.56 | 1.38 |
| 2004-06-22 | Adam Eaton | R | 27 | L 2-1 | vs ARI | 15 | 91 | - | 7.0 | 5 | 0 | 0 | 0 | 0 | 5 | 100 | 30 | 70 | 70% | 3-7 | 4.70 | 1.21 |
| 2004-06-23 | David Wells | L | 41 | L 4-3 | vs ARI | 12 | 398 | - | 7.0 | 8 | 2 | 2 | 0 | 0 | 2 | 87 | 26 | 61 | 70% | 2-5 | 3.00 | 0.99 |
| 2004-06-25 | Brian Lawrence | R | 28 | W 3-2 | @ SEA | 16 | 95 | W | 6.1 | 6 | 2 | 2 | 1 | 1 | 3 | 93 | 34 | 59 | 63% | 9-5 | 3.87 | 1.41 |
| 2004-06-26 | Ismael Valdez | R | 31 | L 3-7 | @ SEA | 14 | 264 | L | 5.2 | 8 | 4 | 4 | 1 | 2 | 1 | 109 | 39 | 70 | 64% | 6-4 | 4.66 | 1.40 |
| 2004-06-27 | Adam Eaton | R | 27 | W 5-1 | @ SEA | 16 | 92 | W | 6.1 | 3 | 1 | 1 | 0 | 2 | 4 | 104 | 36 | 68 | 65% | 4-7 | 4.50 | 1.18 |
| 2004-06-28 | David Wells | L | 41 | W 10-5 | @ ARI | 13 | 399 | W | 5.1 | 8 | 4 | 4 | 2 | 1 | 6 | 90 | 31 | 59 | 66% | 3-5 | 3.25 | 1.04 |
| 2004-06-29 | Brian Sweeney | R | 30 | W 3-2 | @ ARI | 1 | 1 | W | 5.1 | 4 | 1 | 1 | 0 | 1 | 5 | 87 | 34 | 53 | 61% | 1-0 | 3.86 | 1.43 |
| 2004-06-30 | Brian Lawrence | R | 28 | L 5-8 | @ ARI | 17 | 96 | - | 6.0 | 5 | 4 | 4 | 1 | 4 | 3 | 94 | 34 | 60 | 64% | 9-5 | 4.00 | 1.41 |
| 2004-07-01 | Ismael Valdez | R | 31 | L 5-7 | @ ARI | 15 | 265 | L | 4.0 | 7 | 6 | 6 | 2 | 4 | 3 | 83 | 32 | 51 | 61% | 6-5 | 5.06 | 1.46 |
| 2004-07-02 | Jake Peavy | R | 23 | L 7-5 | vs KCA | 10 | 59 | W | 5.1 | 3 | 1 | 1 | 1 | 1 | 6 | 88 | 30 | 58 | 66% | 5-2 | 1.98 | 1.31 |
| 2004-07-03 | Adam Eaton | R | 27 | L 5-4 | vs KCA | 17 | 93 | - | 7.0 | 2 | 2 | 2 | 0 | 1 | 10 | 97 | 26 | 71 | 73% | 4-7 | 4.37 | 1.13 |
| 2004-07-04 | David Wells | L | 41 | L 7-1 | vs KCA | 14 | 400 | W | 6.0 | 4 | 0 | 0 | 0 | 0 | 7 | 66 | 20 | 46 | 70% | 4-5 | 3.03 | 1.01 |
| 2004-07-05 | Brian Lawrence | R | 28 | L 2-1 | vs HOU | 18 | 97 | W | 8.0 | 5 | 1 | 1 | 1 | 3 | 3 | 94 | 35 | 59 | 63% | 10-5 | 3.79 | 1.38 |
| 2004-07-06 | Ismael Valdez | R | 31 | L 5-3 | vs HOU | 16 | 266 | W | 5.0 | 4 | 3 | 2 | 1 | 2 | 1 | 80 | 32 | 48 | 60% | 7-5 | 4.98 | 1.45 |
| 2004-07-07 | Jake Peavy | R | 23 | W 1-5 | vs HOU | 11 | 60 | L | 4.0 | 7 | 4 | 4 | 1 | 4 | 2 | 81 | 35 | 46 | 57% | 5-3 | 2.43 | 1.40 |
| 2004-07-08 | Adam Eaton | R | 27 | W 1-5 | vs COL | 18 | 94 | L | 6.0 | 9 | 5 | 5 | 1 | 1 | 3 | 113 | 40 | 73 | 65% | 4-8 | 4.54 | 1.16 |
| 2004-07-09 | David Wells | L | 41 | W 5-6 | vs COL | 15 | 401 | - | 7.0 | 7 | 3 | 3 | 0 | 0 | 3 | 112 | 38 | 74 | 66% | 4-5 | 3.09 | 1.01 |
| 2004-07-10 | Brian Lawrence | R | 28 | W 2-6 | vs COL | 19 | 98 | L | 4.0 | 6 | 3 | 3 | 2 | 2 | 2 | 71 | 30 | 41 | 58% | 10-6 | 3.89 | 1.41 |
| 2004-07-11 | Ismael Valdez | R | 31 | L 4-2 | vs COL | 17 | 267 | W | 5.0 | 6 | 1 | 1 | 0 | 4 | 0 | 88 | 36 | 52 | 59% | 8-5 | 4.82 | 1.47 |
| 2004-07-16 | Jake Peavy | R | 23 | W 5-1 | @ HOU | 12 | 61 | W | 5.0 | 6 | 1 | 1 | 0 | 2 | 3 | 85 | 35 | 50 | 59% | 6-3 | 2.38 | 1.41 |
| 2004-07-17 | David Wells | L | 41 | W 7-4 | @ HOU | 16 | 402 | W | 5.1 | 7 | 3 | 3 | 1 | 0 | 0 | 71 | 23 | 48 | 68% | 5-5 | 3.21 | 1.03 |
| 2004-07-18 | Brian Lawrence | R | 28 | L 3-5 | @ HOU | 20 | 99 | L | 6.2 | 10 | 5 | 5 | 3 | 0 | 3 | 95 | 31 | 64 | 67% | 10-7 | 4.04 | 1.41 |
| 2004-07-19 | Ismael Valdez | R | 31 | W 13-6 | @ COL | 18 | 268 | W | 5.2 | 9 | 5 | 5 | 3 | 0 | 1 | 81 | 30 | 51 | 63% | 9-5 | 4.97 | 1.48 |
| 2004-07-20 | Adam Eaton | R | 27 | W 9-7 | @ COL | 19 | 95 | W | 5.2 | 9 | 4 | 4 | 0 | 4 | 2 | 101 | 40 | 61 | 60% | 5-8 | 4.62 | 1.21 |
| 2004-07-21 | Jake Peavy | R | 23 | W 7-1 | @ SFN | 13 | 62 | W | 8.0 | 4 | 1 | 1 | 1 | 2 | 5 | 112 | 31 | 81 | 72% | 7-3 | 2.25 | 1.34 |
| 2004-07-22 | David Wells | L | 41 | W 9-4 | @ SFN | 17 | 403 | W | 5.2 | 10 | 4 | 4 | 1 | 2 | 1 | 98 | 36 | 62 | 63% | 6-5 | 3.36 | 1.08 |
| 2004-07-23 | Brian Lawrence | R | 28 | L 2-3 | @ LAN | 21 | 100 | - | 7.0 | 4 | 2 | 1 | 0 | 3 | 5 | 102 | 36 | 66 | 65% | 10-7 | 3.89 | 1.38 |
| 2004-07-24 | Ismael Valdez | R | 31 | L 2-12 | @ LAN | 19 | 269 | L | 4.0 | 11 | 8 | 8 | 1 | 0 | 1 | 78 | 31 | 47 | 60% | 9-6 | 5.45 | 1.52 |
| 2004-07-25 | Adam Eaton | R | 27 | W 3-0 | @ LAN | 20 | 96 | W | 7.0 | 1 | 0 | 0 | 0 | 2 | 3 | 100 | 33 | 67 | 67% | 6-8 | 4.35 | 1.17 |
| 2004-07-26 | Jake Peavy | R | 23 | L 3-2 | vs SFN | 14 | 63 | - | 5.1 | 4 | 2 | 2 | 0 | 3 | 5 | 86 | 34 | 52 | 60% | 7-3 | 2.33 | 1.35 |
| 2004-07-27 | David Wells | L | 41 | W 4-6 | vs SFN | 18 | 404 | L | 6.0 | 10 | 6 | 6 | 1 | 0 | 2 | 107 | 34 | 73 | 68% | 6-6 | 3.66 | 1.12 |
| 2004-07-28 | Brian Lawrence | R | 28 | L 9-4 | vs SFN | 22 | 101 | W | 6.0 | 2 | 1 | 1 | 0 | 3 | 1 | 68 | 31 | 37 | 54% | 11-7 | 3.78 | 1.36 |
| 2004-07-29 | Ismael Valdez | R | 31 | L 7-4 | vs SFN | 20 | 270 | - | 5.1 | 6 | 4 | 4 | 2 | 0 | 2 | 79 | 25 | 54 | 68% | 9-6 | 5.53 | 1.51 |
| 2004-07-30 | Adam Eaton | R | 27 | W 3-12 | vs LAN | 21 | 97 | L | 3.2 | 9 | 7 | 7 | 1 | 2 | 2 | 83 | 23 | 60 | 72% | 6-9 | 4.75 | 1.23 |
| 2004-07-31 | Jake Peavy | R | 23 | L 3-2 | vs LAN | 15 | 64 | - | 7.2 | 7 | 2 | 2 | 1 | 2 | 9 | 105 | 30 | 75 | 71% | 7-3 | 2.33 | 1.33 |
| 2004-08-01 | David Wells | L | 41 | W 1-2 | vs LAN | 19 | 405 | - | 5.1 | 5 | 1 | 1 | 0 | 1 | 4 | 89 | 24 | 65 | 73% | 6-6 | 3.58 | 1.12 |
| 2004-08-03 | Brian Lawrence | R | 28 | W 2-5 | vs PHI | 23 | 102 | L | 6.2 | 4 | 2 | 2 | 0 | 1 | 3 | 100 | 36 | 64 | 64% | 11-8 | 3.74 | 1.34 |
| 2004-08-04 | Adam Eaton | R | 27 | W 5-7 | vs PHI | 22 | 98 | L | 5.0 | 8 | 7 | 5 | 2 | 1 | 6 | 96 | 34 | 62 | 65% | 6-10 | 4.91 | 1.25 |
| 2004-08-05 | Sterling Hitchcock | L | 33 | W 3-5 | vs PHI | 1 | 197 | - | 6.0 | 4 | 3 | 3 | 1 | 2 | 2 | 83 | 30 | 53 | 64% | 0-0 | 4.50 | 1.00 |
| 2004-08-06 | Jake Peavy | R | 23 | L 13-1 | vs PIT | 16 | 65 | W | 7.0 | 4 | 1 | 0 | 0 | 1 | 9 | 97 | 27 | 70 | 72% | 8-3 | 2.16 | 1.28 |
| 2004-08-07 | David Wells | L | 41 | W 1-3 | vs PIT | 20 | 406 | L | 7.0 | 10 | 2 | 2 | 0 | 3 | 5 | 108 | 31 | 77 | 71% | 6-7 | 3.53 | 1.16 |
| 2004-08-08 | Brian Lawrence | R | 28 | W 2-4 | vs PIT | 24 | 103 | L | 5.0 | 9 | 3 | 3 | 2 | 2 | 2 | 89 | 28 | 61 | 69% | 11-9 | 3.80 | 1.37 |
| 2004-08-10 | Adam Eaton | R | 27 | W 8-6 | @ CHN | 23 | 99 | W | 5.0 | 5 | 5 | 4 | 4 | 1 | 4 | 87 | 32 | 55 | 63% | 7-10 | 4.99 | 1.25 |
| 2004-08-11 | Sterling Hitchcock | L | 33 | L 1-5 | @ CHN | 2 | 198 | L | 5.0 | 6 | 5 | 5 | 1 | 2 | 5 | 78 | 33 | 45 | 58% | 0-1 | 6.55 | 1.27 |
| 2004-08-12 | Jake Peavy | R | 23 | W 5-4 | @ CHN | 17 | 66 | - | 5.0 | 5 | 2 | 1 | 0 | 1 | 3 | 83 | 30 | 53 | 64% | 8-3 | 2.14 | 1.28 |
| 2004-08-13 | David Wells | L | 41 | W 14-5 | @ CIN | 21 | 407 | W | 5.0 | 5 | 3 | 3 | 2 | 1 | 1 | 80 | 28 | 52 | 65% | 7-7 | 3.60 | 1.16 |
| 2004-08-14 | Brian Lawrence | R | 28 | L 5-11 | @ CIN | 25 | 104 | L | 5.0 | 10 | 6 | 6 | 2 | 0 | 4 | 70 | 25 | 45 | 64% | 11-10 | 4.04 | 1.39 |
| 2004-08-15 | Adam Eaton | R | 27 | W 7-2 | @ CIN | 24 | 100 | W | 6.0 | 8 | 2 | 2 | 1 | 1 | 8 | 111 | 34 | 77 | 69% | 8-10 | 4.91 | 1.26 |
| 2004-08-16 | Sterling Hitchcock | L | 33 | W 4-5 | vs ATL | 3 | 199 | L | 6.1 | 6 | 4 | 4 | 2 | 3 | 5 | 99 | 40 | 59 | 60% | 0-2 | 6.35 | 1.35 |
| 2004-08-17 | Jake Peavy | R | 23 | L 11-6 | vs ATL | 18 | 67 | W | 7.0 | 2 | 1 | 1 | 1 | 0 | 9 | 98 | 31 | 67 | 68% | 9-3 | 2.08 | 1.21 |
| 2004-08-18 | David Wells | L | 41 | W 5-6 | vs ATL | 22 | 408 | - | 6.0 | 9 | 3 | 3 | 0 | 2 | 6 | 96 | 34 | 62 | 65% | 7-7 | 3.64 | 1.19 |
| 2004-08-20 | Brian Lawrence | R | 28 | L 6-1 | vs FLO | 26 | 105 | W | 9.0 | 5 | 1 | 1 | 0 | 2 | 4 | 118 | 38 | 80 | 68% | 12-10 | 3.87 | 1.35 |
| 2004-08-21 | Adam Eaton | R | 27 | W 2-8 | vs FLO | 25 | 101 | L | 6.0 | 11 | 5 | 4 | 1 | 2 | 5 | 98 | 36 | 62 | 63% | 8-11 | 4.95 | 1.30 |
| 2004-08-22 | Sterling Hitchcock | L | 33 | W 3-8 | vs FLO | 4 | 200 | L | 4.0 | 6 | 3 | 3 | 1 | 1 | 2 | 72 | 37 | 35 | 49% | 0-3 | 6.43 | 1.43 |
| 2004-08-23 | Jake Peavy | R | 23 | W 9-4 | @ NYN | 19 | 68 | W | 5.1 | 4 | 3 | 3 | 1 | 4 | 5 | 99 | 43 | 56 | 57% | 10-3 | 2.23 | 1.23 |
| 2004-08-24 | David Wells | L | 41 | W 3-1 | @ NYN | 23 | 409 | W | 8.2 | 4 | 1 | 1 | 0 | 0 | 4 | 110 | 33 | 77 | 70% | 8-7 | 3.48 | 1.14 |
| 2004-08-25 | Brian Lawrence | R | 28 | W 4-0 | @ NYN | 27 | 106 | W | 9.0 | 6 | 0 | 0 | 0 | 1 | 4 | 111 | 39 | 72 | 65% | 13-10 | 3.65 | 1.32 |
| 2004-08-26 | Adam Eaton | R | 27 | W 10-3 | @ NYN | 26 | 102 | W | 7.0 | 2 | 0 | 0 | 0 | 1 | 4 | 87 | 26 | 61 | 70% | 9-11 | 4.73 | 1.26 |
| 2004-08-27 | Dennis Tankersley | R | 26 | L 3-10 | @ MON | 5 | 15 | L | 5.1 | 7 | 6 | 5 | 2 | 3 | 4 | 110 | 53 | 57 | 52% | 0-4 | 4.06 | 1.39 |
| 2004-08-28 | Jake Peavy | R | 23 | W 5-2 | @ MON | 20 | 69 | W | 6.2 | 5 | 2 | 2 | 0 | 1 | 6 | 103 | 31 | 72 | 70% | 11-3 | 2.25 | 1.21 |
| 2004-08-29 | David Wells | L | 41 | W 11-3 | @ MON | 24 | 410 | W | 7.0 | 8 | 3 | 3 | 0 | 0 | 2 | 98 | 26 | 72 | 73% | 9-7 | 3.49 | 1.14 |
| 2004-08-31 | Brian Lawrence | R | 28 | L 3-9 | @ SLN | 28 | 107 | L | 4.1 | 12 | 5 | 5 | 1 | 1 | 2 | 79 | 28 | 51 | 65% | 13-11 | 3.81 | 1.36 |
| 2004-09-01 | Adam Eaton | R | 27 | L 2-4 | @ SLN | 27 | 103 | L | 6.0 | 4 | 3 | 3 | 2 | 3 | 6 | 92 | 34 | 58 | 63% | 9-12 | 4.72 | 1.25 |
| 2004-09-02 | Jake Peavy | R | 23 | L 2-7 | @ SLN | 21 | 70 | L | 6.0 | 8 | 4 | 1 | 2 | 1 | 6 | 107 | 32 | 75 | 70% | 11-4 | 2.21 | 1.22 |
| 2004-09-03 | David Wells | L | 41 | L 7-6 | vs COL | 25 | 411 | - | 5.0 | 9 | 5 | 4 | 1 | 0 | 2 | 79 | 22 | 57 | 72% | 9-7 | 3.61 | 1.17 |
| 2004-09-04 | Dennis Tankersley | R | 26 | W 2-8 | vs COL | 6 | 16 | L | 4.1 | 6 | 6 | 6 | 1 | 3 | 3 | 90 | 39 | 51 | 57% | 0-5 | 5.14 | 1.49 |
| 2004-09-05 | Brian Lawrence | R | 28 | W 2-5 | vs COL | 29 | 108 | L | 7.0 | 7 | 3 | 3 | 1 | 3 | 3 | 107 | 44 | 63 | 59% | 13-12 | 3.81 | 1.36 |
| 2004-09-06 | Adam Eaton | R | 27 | L 7-3 | vs SLN | 28 | 104 | - | 6.2 | 7 | 3 | 3 | 0 | 4 | 4 | 109 | 37 | 72 | 66% | 9-12 | 4.69 | 1.27 |
| 2004-09-07 | Jake Peavy | R | 23 | W 2-4 | vs SLN | 22 | 71 | L | 5.1 | 8 | 4 | 3 | 0 | 3 | 8 | 124 | 48 | 76 | 61% | 11-5 | 2.34 | 1.26 |
| 2004-09-08 | David Wells | L | 41 | L 10-5 | vs SLN | 26 | 412 | W | 7.0 | 4 | 2 | 2 | 1 | 0 | 6 | 101 | 29 | 72 | 71% | 10-7 | 3.57 | 1.14 |
| 2004-09-09 | Justin Germano | R | 22 | L 7-9 | @ COL | 4 | 4 | - | 4.0 | 7 | 4 | 4 | 0 | 2 | 4 | 78 | 27 | 51 | 65% | 1-1 | 7.00 | 1.83 |
| 2004-09-10 | Brian Lawrence | R | 28 | W 10-4 | @ COL | 30 | 109 | W | 6.0 | 8 | 4 | 4 | 0 | 1 | 3 | 74 | 22 | 52 | 70% | 14-12 | 3.89 | 1.37 |
| 2004-09-11 | Adam Eaton | R | 27 | L 2-13 | @ COL | 29 | 105 | L | 5.0 | 12 | 7 | 7 | 0 | 2 | 6 | 99 | 38 | 61 | 62% | 9-13 | 4.91 | 1.31 |
| 2004-09-12 | Jake Peavy | R | 23 | W 15-2 | @ COL | 23 | 72 | W | 8.0 | 7 | 2 | 1 | 1 | 1 | 8 | 97 | 28 | 69 | 71% | 12-5 | 2.27 | 1.24 |
| 2004-09-13 | David Wells | L | 41 | W 9-7 | @ LAN | 27 | 413 | W | 6.0 | 6 | 5 | 3 | 3 | 0 | 9 | 96 | 33 | 63 | 66% | 11-7 | 3.60 | 1.14 |
| 2004-09-14 | Justin Germano | R | 22 | L 3-6 | @ LAN | 5 | 5 | L | 3.2 | 7 | 5 | 5 | 1 | 1 | 3 | 65 | 24 | 41 | 63% | 1-2 | 8.14 | 1.95 |
| 2004-09-15 | Brian Lawrence | R | 28 | W 7-3 | @ LAN | 31 | 110 | W | 6.0 | 7 | 3 | 3 | 0 | 1 | 4 | 105 | 40 | 65 | 62% | 15-12 | 3.90 | 1.37 |
| 2004-09-16 | Adam Eaton | R | 27 | W 3-0 | @ LAN | 30 | 106 | W | 7.0 | 5 | 0 | 0 | 0 | 1 | 6 | 96 | 30 | 66 | 69% | 10-13 | 4.72 | 1.29 |
| 2004-09-17 | Jake Peavy | R | 23 | L 1-4 | @ SFN | 24 | 73 | L | 7.0 | 8 | 4 | 4 | 1 | 3 | 7 | 121 | 42 | 79 | 65% | 12-6 | 2.40 | 1.26 |
| 2004-09-18 | David Wells | L | 41 | W 5-1 | @ SFN | 28 | 414 | W | 7.1 | 5 | 1 | 1 | 1 | 0 | 5 | 82 | 22 | 60 | 73% | 12-7 | 3.51 | 1.12 |
| 2004-09-19 | Brian Lawrence | R | 28 | L 2-4 | @ SFN | 32 | 111 | - | 7.0 | 4 | 2 | 1 | 0 | 0 | 6 | 84 | 26 | 58 | 69% | 15-12 | 3.81 | 1.34 |
| 2004-09-21 | Adam Eaton | R | 27 | L 9-4 | vs LAN | 31 | 107 | W | 5.0 | 4 | 2 | 2 | 1 | 2 | 5 | 103 | 35 | 68 | 66% | 11-13 | 4.69 | 1.29 |
| 2004-09-22 | Jake Peavy | R | 23 | L 4-0 | vs LAN | 25 | 74 | W | 8.0 | 3 | 0 | 0 | 0 | 2 | 11 | 114 | 44 | 70 | 61% | 13-6 | 2.28 | 1.23 |
| 2004-09-23 | Brian Lawrence | R | 28 | W 6-9 | vs LAN | 33 | 112 | L | 4.0 | 6 | 5 | 4 | 1 | 1 | 2 | 73 | 25 | 48 | 66% | 15-13 | 3.92 | 1.35 |
| 2004-09-24 | David Wells | L | 41 | L 6-5 | vs ARI | 29 | 415 | - | 5.1 | 9 | 5 | 5 | 0 | 2 | 3 | 93 | 25 | 68 | 73% | 12-7 | 3.64 | 1.14 |
| 2004-09-25 | Adam Eaton | R | 27 | L 6-5 | vs ARI | 32 | 108 | - | 6.0 | 7 | 4 | 4 | 0 | 1 | 5 | 112 | 33 | 79 | 71% | 11-13 | 4.73 | 1.29 |
| 2004-09-26 | Jake Peavy | R | 23 | L 7-1 | vs ARI | 26 | 75 | W | 6.0 | 3 | 1 | 1 | 0 | 2 | 7 | 103 | 30 | 73 | 71% | 14-6 | 2.25 | 1.21 |
| 2004-09-28 | Brian Lawrence | R | 28 | W 5-7 | vs SFN | 34 | 113 | L | 3.1 | 9 | 6 | 6 | 0 | 3 | 1 | 72 | 30 | 42 | 58% | 15-14 | 4.12 | 1.38 |
| 2004-09-29 | David Wells | L | 41 | L 4-3 | vs SFN | 30 | 416 | - | 8.0 | 7 | 3 | 3 | 0 | 1 | 4 | 88 | 25 | 63 | 72% | 12-7 | 3.63 | 1.14 |
| 2004-09-30 | Adam Eaton | R | 27 | W 1-4 | vs SFN | 33 | 109 | L | 7.1 | 8 | 4 | 1 | 1 | 0 | 5 | 112 | 33 | 79 | 71% | 11-14 | 4.61 | 1.29 |
| 2004-10-01 | Jake Peavy | R | 23 | W 3-2 | @ ARI | 27 | 76 | W | 6.0 | 4 | 2 | 2 | 1 | 1 | 11 | 97 | 30 | 67 | 69% | 15-6 | 2.28 | 1.20 |
| 2004-10-02 | Brian Sweeney | R | 30 | L 6-7 | @ ARI | 2 | 2 | - | 3.1 | 7 | 5 | 5 | 0 | 1 | 3 | 65 | 27 | 38 | 58% | 1-0 | 5.79 | 1.57 |
| 2004-10-03 | David Wells | L | 41 | L 1-4 | @ ARI | 31 | 417 | L | 5.0 | 6 | 4 | 4 | 3 | 0 | 4 | 74 | 14 | 60 | 81% | 12-8 | 3.72 | 1.14 |