| Central | W | L | Pct | GB |
| Chi Cubs | 88 | 74 | .543 | -- |
| Houston | 87 | 75 | .537 | 1.0 |
| St. Louis | 85 | 77 | .525 | 3.0 |
| Pittsburgh | 75 | 87 | .463 | 13.0 |
| Cincinnati | 69 | 93 | .426 | 19.0 |
| Milwaukee | 68 | 94 | .420 | 20.0 |
| 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 |
| 2003-03-31 | Matt Morris | R | 29 | L 11-9 | vs MIL | 1 | 117 | - | 7.0 | 8 | 6 | 5 | 2 | 2 | 4 | 106 | 37 | 69 | 65% | 0-0 | 6.43 | 1.43 |
| 2003-04-02 | Woody Williams | R | 37 | L 7-0 | vs MIL | 1 | 184 | W | 6.2 | 2 | 0 | 0 | 0 | 1 | 5 | 102 | 40 | 62 | 61% | 1-0 | 0.00 | 0.43 |
| 2003-04-03 | Garrett Stephenson | R | 31 | L 6-4 | vs MIL | 1 | 78 | W | 6.1 | 4 | 1 | 1 | 1 | 2 | 2 | 96 | 40 | 56 | 58% | 1-0 | 1.50 | 1.00 |
| 2003-04-04 | Brett Tomko | R | 30 | W 5-6 | vs HOU | 1 | 124 | - | 6.0 | 5 | 5 | 0 | 1 | 3 | 3 | 103 | 38 | 65 | 63% | 0-0 | 0.00 | 1.33 |
| 2003-04-05 | Matt Morris | R | 29 | W 1-2 | vs HOU | 2 | 118 | - | 8.0 | 3 | 0 | 0 | 0 | 2 | 10 | 103 | 32 | 71 | 69% | 0-0 | 3.00 | 1.00 |
| 2003-04-08 | Jason Simontacchi | R | 29 | W 15-12 | @ COL | 1 | 25 | - | 3.0 | 7 | 5 | 5 | 0 | 5 | 1 | 85 | 39 | 46 | 54% | 0-0 | 15.00 | 4.00 |
| 2003-04-09 | Brett Tomko | R | 30 | L 4-9 | @ COL | 2 | 125 | L | 6.0 | 9 | 9 | 9 | 2 | 1 | 4 | 91 | 31 | 60 | 66% | 0-1 | 6.75 | 1.50 |
| 2003-04-10 | Garrett Stephenson | R | 31 | L 6-7 | @ COL | 2 | 79 | - | 6.0 | 6 | 4 | 4 | 0 | 1 | 5 | 86 | 29 | 57 | 66% | 1-0 | 3.75 | 1.08 |
| 2003-04-11 | Matt Morris | R | 29 | L 2-3 | @ HOU | 3 | 119 | L | 8.2 | 6 | 3 | 3 | 2 | 1 | 5 | 119 | 45 | 74 | 62% | 0-1 | 3.00 | 0.92 |
| 2003-04-12 | Woody Williams | R | 37 | W 3-0 | @ HOU | 2 | 185 | W | 6.0 | 6 | 0 | 0 | 0 | 2 | 2 | 95 | 40 | 55 | 58% | 2-0 | 0.00 | 0.85 |
| 2003-04-13 | Jason Simontacchi | R | 29 | W 11-8 | @ HOU | 2 | 26 | - | 4.0 | 6 | 6 | 6 | 3 | 4 | 3 | 76 | 29 | 47 | 62% | 0-0 | 14.14 | 3.14 |
| 2003-04-14 | Brett Tomko | R | 30 | W 7-5 | @ MIL | 3 | 126 | W | 5.1 | 8 | 5 | 5 | 1 | 3 | 6 | 110 | 45 | 65 | 59% | 1-1 | 7.41 | 1.71 |
| 2003-04-15 | Garrett Stephenson | R | 31 | L 1-6 | @ MIL | 3 | 80 | L | 4.0 | 9 | 6 | 6 | 2 | 2 | 2 | 96 | 42 | 54 | 56% | 1-1 | 6.19 | 1.50 |
| 2003-04-16 | Matt Morris | R | 29 | W 15-2 | @ MIL | 4 | 120 | W | 6.0 | 5 | 1 | 0 | 0 | 4 | 7 | 105 | 42 | 63 | 60% | 1-1 | 2.40 | 1.03 |
| 2003-04-18 | Woody Williams | R | 37 | L 6-3 | vs ARI | 3 | 186 | W | 7.0 | 3 | 0 | 0 | 0 | 0 | 6 | 103 | 37 | 66 | 64% | 3-0 | 0.00 | 0.70 |
| 2003-04-19 | Jason Simontacchi | R | 29 | W 3-4 | vs ARI | 3 | 27 | L | 5.0 | 6 | 4 | 4 | 1 | 1 | 3 | 98 | 31 | 67 | 68% | 0-1 | 11.25 | 2.42 |
| 2003-04-20 | Brett Tomko | R | 30 | W 0-1 | vs ARI | 4 | 127 | L | 8.0 | 8 | 1 | 1 | 0 | 4 | 6 | 111 | 42 | 69 | 62% | 1-2 | 5.40 | 1.64 |
| 2003-04-22 | Garrett Stephenson | R | 31 | L 3-5 | @ ATL | 4 | 81 | L | 4.2 | 5 | 4 | 4 | 1 | 5 | 3 | 105 | 55 | 50 | 48% | 1-2 | 6.43 | 1.62 |
| 2003-04-23 | Matt Morris | R | 29 | L 2-4 | @ ATL | 5 | 121 | L | 7.0 | 5 | 2 | 2 | 2 | 1 | 3 | 71 | 23 | 48 | 68% | 1-2 | 2.43 | 1.00 |
| 2003-04-24 | Woody Williams | R | 37 | L 3-4 | @ ATL | 4 | 187 | - | 6.1 | 11 | 2 | 2 | 0 | 1 | 4 | 107 | 38 | 69 | 64% | 3-0 | 0.69 | 1.00 |
| 2003-04-25 | Brett Tomko | R | 30 | W 9-2 | @ FLO | 5 | 128 | W | 9.0 | 9 | 2 | 2 | 1 | 1 | 3 | 115 | 32 | 83 | 72% | 2-2 | 4.50 | 1.50 |
| 2003-04-26 | Jason Simontacchi | R | 29 | L 3-5 | @ FLO | 4 | 28 | - | 6.1 | 4 | 2 | 2 | 1 | 2 | 0 | 88 | 32 | 56 | 64% | 0-1 | 8.50 | 1.94 |
| 2003-04-27 | Garrett Stephenson | R | 31 | W 7-6 | @ FLO | 5 | 82 | - | 8.0 | 4 | 1 | 1 | 0 | 5 | 4 | 123 | 49 | 74 | 60% | 1-2 | 4.97 | 1.48 |
| 2003-04-29 | Matt Morris | R | 29 | L 13-3 | vs NYN | 6 | 122 | W | 6.0 | 5 | 2 | 2 | 0 | 2 | 5 | 115 | 43 | 72 | 63% | 2-2 | 2.51 | 1.02 |
| 2003-04-30 | Woody Williams | R | 37 | L 13-4 | vs NYN | 5 | 188 | W | 7.0 | 4 | 2 | 2 | 0 | 2 | 5 | 101 | 34 | 67 | 66% | 4-0 | 1.09 | 0.97 |
| 2003-05-01 | Brett Tomko | R | 30 | L 6-5 | vs NYN | 6 | 129 | - | 6.1 | 6 | 2 | 2 | 0 | 3 | 2 | 104 | 41 | 63 | 61% | 2-2 | 4.17 | 1.46 |
| 2003-05-02 | Jason Simontacchi | R | 29 | L 8-1 | vs MON | 5 | 29 | W | 8.0 | 6 | 1 | 1 | 0 | 3 | 1 | 104 | 43 | 61 | 59% | 1-1 | 6.23 | 1.69 |
| 2003-05-03 | Garrett Stephenson | R | 31 | L 3-1 | vs MON | 6 | 83 | W | 8.0 | 8 | 1 | 1 | 0 | 3 | 5 | 121 | 43 | 78 | 64% | 2-2 | 4.14 | 1.46 |
| 2003-05-04 | Matt Morris | R | 29 | L 6-2 | vs MON | 7 | 123 | W | 9.0 | 6 | 2 | 2 | 0 | 3 | 6 | 124 | 41 | 83 | 67% | 3-2 | 2.42 | 1.02 |
| 2003-05-05 | Woody Williams | R | 37 | L 4-5 | @ CIN | 6 | 189 | - | 8.0 | 6 | 4 | 4 | 1 | 1 | 4 | 115 | 36 | 79 | 69% | 4-0 | 1.76 | 0.95 |
| 2003-05-06 | Brett Tomko | R | 30 | L 5-6 | @ CIN | 7 | 130 | - | 8.0 | 8 | 4 | 4 | 1 | 3 | 4 | 107 | 39 | 68 | 64% | 2-2 | 4.22 | 1.45 |
| 2003-05-07 | Jason Simontacchi | R | 29 | L 2-4 | @ CIN | 6 | 30 | L | 6.0 | 4 | 4 | 3 | 2 | 2 | 9 | 107 | 33 | 74 | 69% | 1-2 | 5.91 | 1.56 |
| 2003-05-08 | Garrett Stephenson | R | 31 | L 6-8 | @ CIN | 7 | 84 | - | 5.1 | 8 | 5 | 5 | 3 | 2 | 2 | 81 | 37 | 44 | 54% | 2-2 | 4.71 | 1.52 |
| 2003-05-09 | Matt Morris | R | 29 | W 6-3 | @ CHN | 8 | 124 | W | 8.0 | 10 | 3 | 3 | 2 | 2 | 9 | 111 | 34 | 77 | 69% | 4-2 | 2.55 | 1.08 |
| 2003-05-10 | Woody Williams | R | 37 | L 2-3 | @ CHN | 7 | 190 | - | 8.0 | 8 | 2 | 2 | 1 | 1 | 9 | 114 | 38 | 76 | 67% | 4-0 | 1.84 | 0.98 |
| 2003-05-13 | Jason Simontacchi | R | 29 | W 2-7 | vs CIN | 7 | 31 | L | 1.2 | 7 | 7 | 7 | 2 | 2 | 1 | 55 | 20 | 35 | 64% | 1-3 | 7.41 | 1.74 |
| 2003-05-14 | Matt Morris | R | 29 | W 0-4 | vs CIN | 9 | 125 | L | 6.0 | 5 | 4 | 4 | 1 | 1 | 4 | 77 | 23 | 54 | 70% | 4-3 | 2.86 | 1.08 |
| 2003-05-15 | Garrett Stephenson | R | 31 | L 6-3 | vs CIN | 8 | 85 | W | 7.0 | 2 | 1 | 1 | 1 | 2 | 3 | 87 | 28 | 59 | 68% | 3-2 | 4.22 | 1.39 |
| 2003-05-16 | Woody Williams | R | 37 | L 7-4 | vs CHN | 8 | 191 | W | 8.0 | 9 | 4 | 4 | 0 | 3 | 6 | 122 | 50 | 72 | 59% | 5-0 | 2.21 | 1.05 |
| 2003-05-17 | Brett Tomko | R | 30 | W 1-2 | vs CHN | 8 | 131 | - | 7.0 | 9 | 1 | 1 | 0 | 3 | 4 | 112 | 49 | 63 | 56% | 2-2 | 3.86 | 1.48 |
| 2003-05-18 | Jason Simontacchi | R | 30 | L 6-3 | vs CHN | 8 | 32 | - | 6.0 | 4 | 3 | 3 | 0 | 2 | 3 | 73 | 30 | 43 | 59% | 1-3 | 6.98 | 1.63 |
| 2003-05-19 | Matt Morris | R | 29 | L 2-0 | vs CHN | 10 | 126 | W | 9.0 | 4 | 0 | 0 | 0 | 0 | 8 | 117 | 35 | 82 | 70% | 5-3 | 2.52 | 1.00 |
| 2003-05-20 | Garrett Stephenson | R | 31 | L 2-3 | @ HOU | 9 | 86 | L | 6.0 | 6 | 3 | 3 | 0 | 4 | 4 | 116 | 45 | 71 | 61% | 3-3 | 4.25 | 1.42 |
| 2003-05-21 | Woody Williams | R | 37 | W 7-4 | @ HOU | 9 | 192 | W | 7.0 | 5 | 4 | 2 | 1 | 2 | 6 | 131 | 52 | 79 | 60% | 6-0 | 2.25 | 1.05 |
| 2003-05-22 | Brett Tomko | R | 30 | L 2-5 | @ HOU | 9 | 132 | L | 4.1 | 8 | 5 | 5 | 2 | 2 | 2 | 89 | 37 | 52 | 58% | 2-3 | 4.35 | 1.55 |
| 2003-05-23 | Jason Simontacchi | R | 30 | W 10-8 | @ PIT | 9 | 33 | - | 4.0 | 9 | 6 | 6 | 2 | 1 | 2 | 71 | 28 | 43 | 61% | 1-3 | 7.57 | 1.70 |
| 2003-05-24 | Matt Morris | R | 29 | W 6-0 | @ PIT | 11 | 127 | W | 9.0 | 9 | 0 | 0 | 0 | 2 | 3 | 130 | 51 | 79 | 61% | 6-3 | 2.25 | 1.02 |
| 2003-05-25 | Garrett Stephenson | R | 31 | L 7-8 | @ PIT | 10 | 87 | - | 5.0 | 6 | 4 | 2 | 0 | 4 | 2 | 92 | 38 | 54 | 59% | 3-3 | 4.20 | 1.47 |
| 2003-05-26 | Woody Williams | R | 37 | L 10-5 | vs HOU | 10 | 193 | W | 6.0 | 6 | 1 | 1 | 0 | 0 | 5 | 98 | 31 | 67 | 68% | 7-0 | 2.19 | 1.04 |
| 2003-05-27 | Brett Tomko | R | 30 | W 4-7 | vs HOU | 10 | 133 | L | 7.0 | 8 | 4 | 4 | 0 | 2 | 6 | 111 | 39 | 72 | 65% | 2-4 | 4.43 | 1.54 |
| 2003-05-28 | Jason Simontacchi | R | 30 | L 3-1 | vs HOU | 10 | 34 | W | 9.0 | 6 | 1 | 1 | 1 | 0 | 5 | 106 | 37 | 69 | 65% | 2-3 | 6.45 | 1.53 |
| 2003-05-29 | Matt Morris | R | 29 | W 4-7 | vs HOU | 12 | 128 | - | 7.1 | 6 | 4 | 3 | 1 | 2 | 6 | 107 | 30 | 77 | 72% | 6-3 | 2.37 | 1.03 |
| 2003-05-30 | Garrett Stephenson | R | 31 | W 3-7 | vs PIT | 11 | 88 | L | 7.0 | 9 | 6 | 6 | 2 | 3 | 2 | 113 | 42 | 71 | 63% | 3-4 | 4.57 | 1.49 |
| 2003-05-31 | Woody Williams | R | 37 | W 3-4 | vs PIT | 11 | 194 | L | 8.0 | 9 | 4 | 2 | 1 | 1 | 5 | 120 | 36 | 84 | 70% | 7-1 | 2.19 | 1.06 |
| 2003-06-01 | Brett Tomko | R | 30 | L 5-4 | vs PIT | 11 | 134 | - | 6.0 | 6 | 3 | 3 | 1 | 0 | 4 | 95 | 28 | 67 | 71% | 2-4 | 4.44 | 1.49 |
| 2003-06-03 | Matt Morris | R | 29 | L 11-5 | vs TOR | 13 | 129 | W | 7.0 | 9 | 4 | 4 | 0 | 0 | 4 | 108 | 29 | 79 | 73% | 7-3 | 2.57 | 1.05 |
| 2003-06-04 | Jason Simontacchi | R | 30 | L 8-5 | vs TOR | 11 | 35 | W | 5.0 | 10 | 5 | 5 | 2 | 1 | 3 | 81 | 29 | 52 | 64% | 3-3 | 6.67 | 1.59 |
| 2003-06-05 | Woody Williams | R | 37 | L 13-5 | vs TOR | 12 | 195 | W | 8.0 | 1 | 0 | 0 | 0 | 1 | 5 | 98 | 30 | 68 | 69% | 8-1 | 1.99 | 0.99 |
| 2003-06-06 | Brett Tomko | R | 30 | L 8-6 | vs BAL | 12 | 135 | - | 5.1 | 9 | 5 | 5 | 0 | 0 | 2 | 97 | 32 | 65 | 67% | 2-4 | 4.73 | 1.51 |
| 2003-06-07 | Garrett Stephenson | R | 31 | W 1-8 | vs BAL | 12 | 89 | L | 5.2 | 7 | 5 | 5 | 4 | 0 | 3 | 88 | 31 | 57 | 65% | 3-5 | 4.81 | 1.47 |
| 2003-06-08 | Matt Morris | R | 29 | L 11-10 | vs BAL | 14 | 130 | - | 5.0 | 11 | 7 | 7 | 1 | 0 | 5 | 91 | 26 | 65 | 71% | 7-3 | 3.06 | 1.11 |
| 2003-06-10 | Woody Williams | R | 37 | W 9-7 | @ BOS | 13 | 196 | - | 6.2 | 10 | 5 | 5 | 1 | 1 | 1 | 122 | 42 | 80 | 66% | 8-1 | 2.32 | 1.03 |
| 2003-06-11 | Brett Tomko | R | 30 | L 1-13 | @ BOS | 13 | 136 | L | 2.0 | 10 | 9 | 9 | 1 | 2 | 0 | 71 | 31 | 40 | 56% | 2-5 | 5.63 | 1.63 |
| 2003-06-12 | Garrett Stephenson | R | 31 | W 8-7 | @ BOS | 13 | 90 | - | 7.0 | 3 | 0 | 0 | 0 | 6 | 6 | 125 | 60 | 65 | 52% | 3-5 | 4.39 | 1.45 |
| 2003-06-13 | Jason Simontacchi | R | 30 | L 2-5 | @ NYA | 12 | 36 | L | 6.0 | 8 | 5 | 5 | 3 | 2 | 5 | 104 | 36 | 68 | 65% | 4-4 | 6.65 | 1.57 |
| 2003-06-14 | Matt Morris | R | 29 | L 4-13 | @ NYA | 15 | 131 | L | 0.2 | 2 | 4 | 4 | 0 | 2 | 0 | 32 | 12 | 20 | 63% | 7-4 | 3.38 | 1.13 |
| 2003-06-15 | Woody Williams | R | 37 | L 2-5 | @ NYA | 14 | 197 | L | 5.1 | 6 | 5 | 5 | 0 | 6 | 2 | 118 | 57 | 61 | 52% | 8-2 | 2.66 | 1.10 |
| 2003-06-16 | Kiko Calero | R | 28 | L 4-9 | @ MIL | 1 | 1 | - | 5.0 | 3 | 1 | 1 | 0 | 2 | 9 | 83 | 33 | 50 | 60% | 1-1 | 2.91 | 1.29 |
| 2003-06-17 | Garrett Stephenson | R | 31 | W 12-3 | @ MIL | 14 | 91 | W | 7.0 | 5 | 2 | 2 | 1 | 1 | 4 | 100 | 42 | 58 | 58% | 4-5 | 4.24 | 1.40 |
| 2003-06-18 | Jason Simontacchi | R | 30 | W 9-1 | @ MIL | 13 | 37 | W | 7.0 | 7 | 1 | 1 | 1 | 1 | 3 | 106 | 40 | 66 | 62% | 5-4 | 6.13 | 1.53 |
| 2003-06-19 | Brett Tomko | R | 30 | W 8-4 | @ MIL | 14 | 137 | W | 6.1 | 9 | 3 | 2 | 0 | 2 | 3 | 114 | 40 | 74 | 65% | 3-5 | 5.97 | 1.70 |
| 2003-06-20 | Matt Morris | R | 29 | W 4-10 | vs KCA | 16 | 132 | L | 5.0 | 8 | 5 | 5 | 1 | 1 | 5 | 89 | 27 | 62 | 70% | 7-5 | 3.63 | 1.17 |
| 2003-06-21 | Woody Williams | R | 37 | L 8-1 | vs KCA | 15 | 198 | W | 8.0 | 5 | 1 | 1 | 1 | 1 | 8 | 124 | 45 | 79 | 64% | 9-2 | 2.55 | 1.08 |
| 2003-06-22 | Garrett Stephenson | R | 31 | W 2-5 | vs KCA | 15 | 92 | L | 6.0 | 7 | 5 | 5 | 1 | 0 | 5 | 83 | 23 | 60 | 72% | 4-6 | 4.45 | 1.39 |
| 2003-06-24 | Brett Tomko | R | 30 | W 4-7 | vs CIN | 15 | 138 | - | 7.0 | 7 | 2 | 2 | 2 | 1 | 1 | 87 | 31 | 56 | 64% | 3-5 | 5.73 | 1.66 |
| 2003-06-25 | Matt Morris | R | 29 | L 9-6 | vs CIN | 17 | 133 | W | 6.0 | 7 | 5 | 5 | 1 | 1 | 3 | 90 | 32 | 58 | 64% | 8-5 | 3.83 | 1.17 |
| 2003-06-26 | Woody Williams | R | 37 | L 11-7 | vs CIN | 16 | 199 | W | 6.0 | 10 | 7 | 7 | 1 | 1 | 4 | 115 | 37 | 78 | 68% | 10-2 | 2.97 | 1.12 |
| 2003-06-27 | Garrett Stephenson | R | 31 | L 3-6 | @ KCA | 16 | 93 | L | 7.0 | 3 | 5 | 2 | 0 | 1 | 1 | 109 | 45 | 64 | 59% | 4-7 | 4.32 | 1.33 |
| 2003-06-28 | Jason Simontacchi | R | 30 | W 13-9 | @ KCA | 14 | 38 | - | 3.1 | 8 | 6 | 6 | 0 | 2 | 1 | 71 | 28 | 43 | 61% | 5-4 | 6.60 | 1.60 |
| 2003-06-29 | Brett Tomko | R | 30 | W 13-6 | @ KCA | 16 | 139 | W | 7.0 | 7 | 4 | 4 | 2 | 1 | 3 | 109 | 40 | 69 | 63% | 4-5 | 5.69 | 1.62 |
| 2003-06-30 | Dan Haren | R | 23 | W 1-5 | vs SFN | 1 | 1 | L | 6.0 | 7 | 4 | 2 | 0 | 1 | 3 | 94 | 34 | 60 | 64% | 0-1 | 3.00 | 1.33 |
| 2003-07-01 | Woody Williams | R | 37 | W 1-5 | vs SFN | 17 | 200 | L | 7.0 | 6 | 5 | 5 | 1 | 2 | 2 | 102 | 41 | 61 | 60% | 10-3 | 3.18 | 1.12 |
| 2003-07-02 | Garrett Stephenson | R | 31 | W 1-4 | vs SFN | 17 | 94 | L | 7.0 | 2 | 3 | 3 | 1 | 3 | 3 | 102 | 38 | 64 | 63% | 4-8 | 4.29 | 1.29 |
| 2003-07-03 | Jason Simontacchi | R | 30 | L 9-5 | vs SFN | 15 | 39 | W | 6.0 | 7 | 5 | 5 | 1 | 1 | 5 | 99 | 35 | 64 | 65% | 6-4 | 6.67 | 1.58 |
| 2003-07-04 | Brett Tomko | R | 30 | W 11-8 | @ CHN | 17 | 140 | W | 6.0 | 7 | 3 | 3 | 3 | 1 | 5 | 84 | 34 | 50 | 60% | 5-5 | 5.63 | 1.61 |
| 2003-07-05 | Matt Morris | R | 29 | L 5-6 | @ CHN | 18 | 134 | - | 5.0 | 8 | 4 | 4 | 2 | 2 | 2 | 93 | 36 | 57 | 61% | 8-5 | 3.98 | 1.21 |
| 2003-07-06 | Woody Williams | R | 37 | W 4-1 | @ CHN | 18 | 201 | W | 7.2 | 6 | 1 | 1 | 0 | 0 | 6 | 118 | 40 | 78 | 66% | 11-3 | 3.05 | 1.09 |
| 2003-07-07 | Garrett Stephenson | R | 32 | L 1-5 | @ SFN | 18 | 95 | L | 6.0 | 6 | 3 | 3 | 2 | 3 | 5 | 102 | 44 | 58 | 57% | 4-9 | 4.30 | 1.30 |
| 2003-07-08 | Dan Haren | R | 23 | L 3-8 | @ SFN | 2 | 2 | L | 1.2 | 5 | 6 | 5 | 1 | 2 | 1 | 73 | 28 | 45 | 62% | 0-2 | 7.88 | 1.88 |
| 2003-07-09 | Brett Tomko | R | 30 | W 5-6 | vs LAN | 18 | 141 | L | 6.0 | 8 | 6 | 6 | 1 | 3 | 2 | 89 | 35 | 54 | 61% | 5-6 | 5.80 | 1.62 |
| 2003-07-10 | Matt Morris | R | 29 | W 4-9 | vs LAN | 19 | 135 | L | 5.0 | 10 | 6 | 5 | 0 | 2 | 2 | 93 | 37 | 56 | 60% | 8-6 | 4.18 | 1.26 |
| 2003-07-11 | Woody Williams | R | 37 | L 4-2 | vs SDN | 19 | 202 | W | 8.0 | 2 | 2 | 2 | 1 | 2 | 2 | 106 | 39 | 67 | 63% | 12-3 | 3.00 | 1.06 |
| 2003-07-12 | Garrett Stephenson | R | 32 | L 9-7 | vs SDN | 19 | 96 | - | 5.0 | 9 | 6 | 6 | 0 | 3 | 2 | 92 | 39 | 53 | 58% | 4-9 | 4.58 | 1.35 |
| 2003-07-13 | Dan Haren | R | 23 | L 3-1 | vs SDN | 3 | 3 | - | 6.0 | 6 | 1 | 1 | 0 | 2 | 5 | 85 | 34 | 51 | 60% | 0-2 | 5.14 | 1.64 |
| 2003-07-17 | Garrett Stephenson | R | 32 | L 3-6 | @ LAN | 20 | 97 | L | 4.0 | 6 | 4 | 4 | 2 | 0 | 4 | 74 | 31 | 43 | 58% | 4-10 | 4.72 | 1.35 |
| 2003-07-18 | Brett Tomko | R | 30 | L 5-8 | @ LAN | 19 | 142 | - | 5.1 | 6 | 5 | 5 | 1 | 1 | 5 | 80 | 26 | 54 | 68% | 5-6 | 5.93 | 1.61 |
| 2003-07-19 | Dan Haren | R | 23 | W 3-1 | @ LAN | 4 | 4 | W | 6.0 | 6 | 1 | 1 | 1 | 2 | 3 | 98 | 31 | 67 | 68% | 1-2 | 4.05 | 1.55 |
| 2003-07-20 | Woody Williams | R | 37 | W 10-7 | @ LAN | 20 | 203 | W | 7.0 | 10 | 6 | 6 | 4 | 0 | 4 | 113 | 38 | 75 | 66% | 13-3 | 3.23 | 1.08 |
| 2003-07-21 | Matt Morris | R | 29 | L 4-5 | @ SDN | 20 | 136 | - | 0.2 | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 4 | 4 | 50% | 8-6 | 4.18 | 1.26 |
| 2003-07-22 | Jeff Fassero | L | 41 | L 2-3 | @ SDN | 1 | 218 | L | 4.0 | 5 | 1 | 1 | 0 | 1 | 7 | 79 | 28 | 51 | 65% | 1-5 | 6.64 | 1.69 |
| 2003-07-23 | Brett Tomko | R | 30 | W 8-4 | @ SDN | 20 | 143 | W | 5.0 | 10 | 3 | 3 | 0 | 1 | 6 | 91 | 34 | 57 | 63% | 6-6 | 5.91 | 1.63 |
| 2003-07-25 | Dan Haren | R | 23 | W 5-10 | vs PIT | 5 | 5 | - | 5.1 | 4 | 3 | 3 | 0 | 4 | 6 | 99 | 39 | 60 | 61% | 1-2 | 4.32 | 1.56 |
| 2003-07-26 | Woody Williams | R | 37 | L 13-8 | vs PIT | 21 | 204 | W | 5.2 | 8 | 5 | 5 | 0 | 3 | 4 | 103 | 40 | 63 | 61% | 14-3 | 3.43 | 1.12 |
| 2003-07-27 | Jeff Fassero | L | 41 | L 4-3 | vs PIT | 2 | 219 | - | 5.2 | 2 | 1 | 1 | 0 | 3 | 5 | 76 | 32 | 44 | 58% | 1-5 | 6.13 | 1.62 |
| 2003-07-28 | Brett Tomko | R | 30 | W 0-3 | vs PIT | 21 | 144 | L | 7.0 | 8 | 3 | 3 | 1 | 2 | 4 | 111 | 40 | 71 | 64% | 6-7 | 5.80 | 1.62 |
| 2003-07-29 | Garrett Stephenson | R | 32 | W 2-1 | @ MON | 21 | 98 | W | 9.0 | 4 | 1 | 1 | 0 | 0 | 4 | 102 | 34 | 68 | 67% | 5-10 | 4.50 | 1.28 |
| 2003-07-30 | Dan Haren | R | 23 | W 11-1 | @ MON | 6 | 6 | W | 7.0 | 4 | 0 | 0 | 0 | 1 | 3 | 94 | 34 | 60 | 64% | 2-2 | 3.38 | 1.38 |
| 2003-07-31 | Woody Williams | R | 37 | L 2-3 | @ MON | 22 | 205 | L | 6.0 | 7 | 3 | 3 | 1 | 2 | 5 | 110 | 38 | 72 | 65% | 14-4 | 3.47 | 1.13 |
| 2003-08-01 | Jeff Fassero | L | 41 | W 8-2 | @ NYN | 3 | 220 | - | 6.0 | 4 | 2 | 2 | 1 | 2 | 4 | 100 | 40 | 60 | 60% | 1-5 | 5.77 | 1.55 |
| 2003-08-02 | Brett Tomko | R | 30 | W 10-9 | @ NYN | 22 | 145 | W | 5.2 | 9 | 3 | 3 | 1 | 1 | 5 | 106 | 43 | 63 | 59% | 7-7 | 5.74 | 1.62 |
| 2003-08-03 | Garrett Stephenson | R | 32 | L 5-13 | @ NYN | 22 | 99 | L | 6.0 | 10 | 4 | 4 | 1 | 1 | 2 | 128 | 50 | 78 | 61% | 5-11 | 4.56 | 1.31 |
| 2003-08-05 | Woody Williams | R | 37 | W 0-4 | vs FLO | 23 | 206 | L | 7.0 | 7 | 4 | 3 | 0 | 2 | 9 | 115 | 37 | 78 | 68% | 14-5 | 3.49 | 1.14 |
| 2003-08-06 | Dan Haren | R | 23 | W 3-7 | vs FLO | 7 | 7 | L | 6.0 | 10 | 5 | 5 | 1 | 1 | 6 | 81 | 23 | 58 | 72% | 2-3 | 4.03 | 1.45 |
| 2003-08-07 | Brett Tomko | R | 30 | L 3-0 | vs FLO | 23 | 146 | W | 8.0 | 4 | 0 | 0 | 0 | 1 | 5 | 117 | 43 | 74 | 63% | 8-7 | 5.44 | 1.57 |
| 2003-08-08 | Jeff Fassero | L | 41 | W 2-7 | vs ATL | 4 | 221 | L | 3.2 | 5 | 4 | 4 | 2 | 2 | 2 | 65 | 25 | 40 | 62% | 1-6 | 6.00 | 1.56 |
| 2003-08-09 | Garrett Stephenson | R | 32 | L 3-1 | vs ATL | 23 | 100 | W | 7.1 | 6 | 1 | 1 | 0 | 3 | 1 | 103 | 36 | 67 | 65% | 6-11 | 4.41 | 1.31 |
| 2003-08-10 | Woody Williams | R | 37 | L 3-2 | vs ATL | 24 | 207 | - | 7.0 | 8 | 2 | 2 | 1 | 3 | 4 | 120 | 44 | 76 | 63% | 14-5 | 3.45 | 1.16 |
| 2003-08-11 | Dan Haren | R | 23 | W 6-4 | @ PIT | 8 | 8 | W | 5.1 | 10 | 1 | 1 | 0 | 1 | 0 | 84 | 32 | 52 | 62% | 3-3 | 3.77 | 1.53 |
| 2003-08-12 | Brett Tomko | R | 30 | W 10-6 | @ PIT | 24 | 147 | W | 6.0 | 8 | 4 | 4 | 4 | 0 | 4 | 118 | 47 | 71 | 60% | 9-7 | 5.46 | 1.56 |
| 2003-08-13 | Jeff Fassero | L | 41 | L 5-6 | @ PIT | 5 | 222 | - | 5.0 | 7 | 2 | 2 | 1 | 0 | 4 | 70 | 22 | 48 | 69% | 1-6 | 5.81 | 1.55 |
| 2003-08-14 | Garrett Stephenson | R | 32 | W 4-3 | @ PIT | 24 | 101 | W | 8.0 | 5 | 1 | 1 | 0 | 0 | 3 | 102 | 33 | 69 | 68% | 7-11 | 4.24 | 1.27 |
| 2003-08-15 | Woody Williams | R | 37 | L 4-7 | @ PHI | 25 | 208 | L | 5.0 | 10 | 5 | 5 | 1 | 2 | 3 | 95 | 33 | 62 | 65% | 14-6 | 3.61 | 1.19 |
| 2003-08-16 | Dan Haren | R | 23 | L 4-5 | @ PHI | 9 | 9 | L | 6.0 | 7 | 5 | 5 | 2 | 1 | 5 | 87 | 31 | 56 | 64% | 3-4 | 4.22 | 1.51 |
| 2003-08-17 | Brett Tomko | R | 30 | L 4-6 | @ PHI | 25 | 148 | L | 3.0 | 6 | 6 | 6 | 2 | 3 | 0 | 69 | 33 | 36 | 52% | 9-8 | 5.70 | 1.59 |
| 2003-08-19 | Jeff Fassero | L | 41 | L 13-5 | vs PIT | 6 | 223 | - | 5.0 | 5 | 4 | 4 | 2 | 4 | 2 | 87 | 35 | 52 | 60% | 1-6 | 5.91 | 1.57 |
| 2003-08-20 | Garrett Stephenson | R | 32 | W 0-14 | vs PIT | 25 | 102 | L | 4.0 | 7 | 5 | 5 | 4 | 1 | 3 | 72 | 24 | 48 | 67% | 7-12 | 4.42 | 1.29 |
| 2003-08-21 | Woody Williams | R | 37 | L 6-3 | vs PIT | 26 | 209 | - | 6.2 | 7 | 1 | 1 | 0 | 2 | 6 | 134 | 44 | 90 | 67% | 14-6 | 3.52 | 1.20 |
| 2003-08-22 | Dan Haren | R | 23 | W 4-9 | vs PHI | 10 | 10 | - | 6.0 | 5 | 2 | 2 | 1 | 1 | 3 | 87 | 32 | 55 | 63% | 3-4 | 4.09 | 1.45 |
| 2003-08-23 | Matt Morris | R | 29 | L 5-3 | vs PHI | 21 | 137 | - | 5.0 | 6 | 1 | 1 | 0 | 0 | 1 | 75 | 23 | 52 | 69% | 8-6 | 4.08 | 1.25 |
| 2003-08-24 | Brett Tomko | R | 30 | L 3-0 | vs PHI | 26 | 149 | W | 6.1 | 5 | 0 | 0 | 0 | 3 | 1 | 105 | 44 | 61 | 58% | 10-8 | 5.49 | 1.58 |
| 2003-08-26 | Garrett Stephenson | R | 32 | W 4-7 | vs CHN | 26 | 103 | L | 3.0 | 5 | 6 | 6 | 2 | 1 | 1 | 64 | 21 | 43 | 67% | 7-13 | 4.67 | 1.30 |
| 2003-08-27 | Woody Williams | R | 37 | L 4-2 | vs CHN | 27 | 210 | - | 7.0 | 5 | 1 | 1 | 0 | 1 | 6 | 114 | 40 | 74 | 65% | 14-6 | 3.44 | 1.18 |
| 2003-08-28 | Matt Morris | R | 29 | L 3-2 | vs CHN | 22 | 138 | - | 7.0 | 4 | 2 | 2 | 1 | 1 | 2 | 80 | 26 | 54 | 68% | 8-6 | 4.01 | 1.23 |
| 2003-08-29 | Dan Haren | R | 23 | L 5-8 | @ CIN | 11 | 11 | L | 5.2 | 6 | 6 | 6 | 1 | 3 | 4 | 104 | 43 | 61 | 59% | 3-5 | 4.57 | 1.46 |
| 2003-08-30 | Brett Tomko | R | 30 | W 6-3 | @ CIN | 27 | 150 | W | 5.2 | 9 | 3 | 3 | 0 | 2 | 4 | 89 | 38 | 51 | 57% | 11-8 | 5.45 | 1.59 |
| 2003-08-31 | Sterling Hitchcock | L | 32 | W 5-0 | @ CIN | 2 | 191 | W | 6.0 | 3 | 0 | 0 | 0 | 1 | 4 | 85 | 29 | 56 | 66% | 3-3 | 4.50 | 1.39 |
| 2003-09-01 | Woody Williams | R | 37 | L 0-7 | @ CHN | 28 | 211 | L | 4.1 | 10 | 6 | 6 | 0 | 2 | 2 | 111 | 47 | 64 | 58% | 14-7 | 3.65 | 1.22 |
| 2003-09-02 | Jason Simontacchi | R | 30 | L 2-4 | @ CHN | 16 | 40 | - | 5.0 | 3 | 2 | 0 | 0 | 1 | 7 | 72 | 26 | 46 | 64% | 8-4 | 5.59 | 1.52 |
| 2003-09-02 | Matt Morris | R | 29 | W 2-0 | @ CHN | 23 | 139 | W | 7.0 | 5 | 0 | 0 | 0 | 4 | 5 | 95 | 35 | 60 | 63% | 9-6 | 3.81 | 1.23 |
| 2003-09-03 | Dan Haren | R | 23 | L 7-8 | @ CHN | 12 | 12 | - | 5.0 | 6 | 2 | 2 | 0 | 1 | 1 | 67 | 26 | 41 | 61% | 3-5 | 4.50 | 1.45 |
| 2003-09-04 | Brett Tomko | R | 30 | L 6-7 | @ CHN | 28 | 151 | - | 4.1 | 7 | 6 | 5 | 0 | 1 | 2 | 77 | 25 | 52 | 68% | 11-8 | 5.59 | 1.60 |
| 2003-09-05 | Sterling Hitchcock | L | 32 | W 2-4 | vs CIN | 3 | 192 | - | 7.0 | 3 | 1 | 1 | 1 | 1 | 8 | 100 | 37 | 63 | 63% | 3-3 | 4.17 | 1.30 |
| 2003-09-06 | Woody Williams | R | 37 | L 13-6 | vs CIN | 29 | 212 | W | 6.0 | 9 | 6 | 6 | 1 | 2 | 8 | 119 | 40 | 79 | 66% | 15-8 | 3.84 | 1.24 |
| 2003-09-07 | Matt Morris | R | 29 | L 9-0 | vs CIN | 24 | 140 | W | 9.0 | 3 | 0 | 0 | 0 | 1 | 8 | 100 | 36 | 64 | 64% | 10-6 | 3.59 | 1.18 |
| 2003-09-09 | Dan Haren | R | 23 | W 1-8 | vs COL | 13 | 13 | L | 3.0 | 3 | 4 | 4 | 2 | 1 | 1 | 52 | 20 | 32 | 62% | 3-6 | 4.83 | 1.45 |
| 2003-09-10 | Brett Tomko | R | 30 | L 10-2 | vs COL | 29 | 152 | W | 9.0 | 6 | 2 | 2 | 1 | 0 | 8 | 109 | 25 | 84 | 77% | 12-8 | 5.41 | 1.55 |
| 2003-09-11 | Sterling Hitchcock | L | 32 | W 4-9 | vs COL | 4 | 193 | L | 3.1 | 8 | 5 | 5 | 4 | 0 | 4 | 77 | 26 | 51 | 66% | 3-4 | 4.63 | 1.36 |
| 2003-09-12 | Woody Williams | R | 37 | L 5-14 | @ HOU | 30 | 213 | L | 3.2 | 8 | 9 | 8 | 1 | 3 | 1 | 87 | 36 | 51 | 59% | 15-9 | 4.12 | 1.27 |
| 2003-09-13 | Matt Morris | R | 29 | L 0-2 | @ HOU | 25 | 141 | L | 7.0 | 4 | 2 | 2 | 1 | 1 | 5 | 83 | 31 | 52 | 63% | 10-7 | 3.54 | 1.16 |
| 2003-09-14 | Dan Haren | R | 23 | L 1-4 | @ HOU | 14 | 14 | L | 3.2 | 5 | 4 | 4 | 0 | 1 | 2 | 65 | 34 | 31 | 48% | 3-7 | 5.05 | 1.45 |
| 2003-09-15 | Brett Tomko | R | 30 | L 11-2 | vs MIL | 30 | 153 | W | 8.0 | 6 | 2 | 2 | 2 | 0 | 2 | 103 | 34 | 69 | 67% | 13-8 | 5.28 | 1.52 |
| 2003-09-16 | Sterling Hitchcock | L | 32 | L 6-5 | vs MIL | 5 | 194 | W | 5.1 | 3 | 4 | 4 | 1 | 5 | 5 | 101 | 46 | 55 | 54% | 4-4 | 4.79 | 1.38 |
| 2003-09-17 | Garrett Stephenson | R | 32 | W 6-7 | vs MIL | 27 | 104 | - | 6.0 | 7 | 4 | 4 | 1 | 2 | 4 | 98 | 32 | 66 | 67% | 7-13 | 4.60 | 1.30 |
| 2003-09-18 | Woody Williams | R | 37 | L 13-0 | vs MIL | 31 | 214 | W | 7.0 | 3 | 0 | 0 | 0 | 2 | 6 | 104 | 39 | 65 | 63% | 16-9 | 3.98 | 1.25 |
| 2003-09-19 | Matt Morris | R | 29 | W 1-8 | vs HOU | 26 | 142 | L | 5.0 | 8 | 6 | 6 | 2 | 2 | 4 | 87 | 35 | 52 | 60% | 10-8 | 3.76 | 1.19 |
| 2003-09-20 | Brett Tomko | R | 30 | L 3-2 | vs HOU | 31 | 154 | - | 6.0 | 5 | 2 | 2 | 0 | 2 | 6 | 101 | 34 | 67 | 66% | 13-8 | 5.21 | 1.51 |
| 2003-09-21 | Sterling Hitchcock | L | 32 | L 6-4 | vs HOU | 6 | 195 | W | 5.0 | 8 | 4 | 4 | 1 | 4 | 5 | 107 | 46 | 61 | 57% | 5-4 | 4.94 | 1.44 |
| 2003-09-23 | Woody Williams | R | 37 | W 5-1 | @ MIL | 32 | 215 | W | 7.0 | 3 | 1 | 1 | 1 | 0 | 6 | 106 | 35 | 71 | 67% | 17-9 | 3.89 | 1.23 |
| 2003-09-24 | Matt Morris | R | 29 | W 8-4 | @ MIL | 27 | 143 | W | 7.0 | 7 | 3 | 3 | 1 | 0 | 3 | 100 | 36 | 64 | 64% | 11-8 | 3.77 | 1.18 |
| 2003-09-26 | Brett Tomko | R | 30 | L 6-7 | @ ARI | 32 | 155 | L | 5.1 | 10 | 5 | 5 | 1 | 2 | 0 | 102 | 40 | 62 | 61% | 13-9 | 5.28 | 1.52 |
| 2003-09-27 | Sterling Hitchcock | L | 32 | W 3-2 | @ ARI | 7 | 196 | W | 5.1 | 5 | 2 | 1 | 1 | 0 | 4 | 80 | 28 | 52 | 65% | 6-4 | 4.70 | 1.40 |
| 2003-09-28 | Woody Williams | R | 37 | W 9-5 | @ ARI | 33 | 216 | W | 6.0 | 8 | 2 | 2 | 1 | 3 | 2 | 95 | 31 | 64 | 67% | 18-9 | 3.87 | 1.24 |