| East | W | L | Pct | GB |
| Atlanta | 101 | 61 | .623 | -- |
| Florida | 91 | 71 | .562 | 10.0 |
| Philadelphia | 86 | 76 | .531 | 15.0 |
| Montreal | 83 | 79 | .512 | 18.0 |
| NY Mets | 66 | 95 | .410 | 34.5 |
| 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 | Tony Armas | R | 25 | W 10-2 | @ ATL | 1 | 82 | W | 6.0 | 5 | 1 | 1 | 0 | 1 | 2 | 83 | 32 | 51 | 61% | 1-0 | 1.50 | 1.00 |
| 2003-04-02 | Zach Day | R | 25 | W 3-0 | @ ATL | 1 | 3 | W | 7.0 | 3 | 0 | 0 | 0 | 2 | 3 | 95 | 41 | 54 | 57% | 1-0 | 0.00 | 0.71 |
| 2003-04-03 | Javier Vazquez | R | 27 | W 4-0 | @ ATL | 1 | 158 | W | 5.2 | 7 | 0 | 0 | 0 | 2 | 5 | 82 | 26 | 56 | 68% | 1-0 | 0.00 | 1.50 |
| 2003-04-04 | Tomo Ohka | R | 27 | L 0-4 | @ NYN | 1 | 67 | L | 4.2 | 10 | 3 | 3 | 0 | 0 | 2 | 63 | 19 | 44 | 70% | 0-1 | 5.40 | 2.00 |
| 2003-04-05 | Tony Armas | R | 25 | L 1-3 | @ NYN | 2 | 83 | L | 5.0 | 6 | 3 | 3 | 0 | 2 | 2 | 96 | 35 | 61 | 64% | 1-1 | 3.27 | 1.27 |
| 2003-04-06 | Livan Hernandez | R | 28 | W 8-5 | @ NYN | 1 | 181 | - | 5.0 | 4 | 3 | 3 | 0 | 2 | 1 | 95 | 40 | 55 | 58% | 0-0 | 5.40 | 1.20 |
| 2003-04-08 | Zach Day | R | 25 | L 1-6 | @ CHN | 2 | 4 | L | 4.1 | 5 | 5 | 3 | 0 | 4 | 1 | 88 | 37 | 51 | 58% | 1-1 | 2.45 | 1.27 |
| 2003-04-09 | Javier Vazquez | R | 27 | L 0-3 | @ CHN | 2 | 159 | L | 7.0 | 5 | 2 | 2 | 1 | 0 | 14 | 98 | 31 | 67 | 68% | 1-1 | 1.38 | 1.08 |
| 2003-04-10 | Tony Armas | R | 25 | W 7-1 | @ CHN | 3 | 84 | W | 7.0 | 3 | 0 | 0 | 0 | 2 | 11 | 105 | 39 | 66 | 63% | 2-1 | 2.00 | 1.06 |
| 2003-04-11 | Tomo Ohka | R | 27 | L 10-0 | vs NYN | 2 | 68 | W | 8.0 | 1 | 0 | 0 | 0 | 4 | 7 | 105 | 38 | 67 | 64% | 1-1 | 2.08 | 1.15 |
| 2003-04-12 | Livan Hernandez | R | 28 | L 5-4 | vs NYN | 2 | 182 | W | 6.0 | 8 | 2 | 1 | 0 | 1 | 6 | 103 | 32 | 71 | 69% | 1-0 | 3.27 | 1.36 |
| 2003-04-13 | Zach Day | R | 25 | L 2-1 | vs NYN | 3 | 5 | - | 6.0 | 4 | 1 | 1 | 0 | 3 | 4 | 100 | 42 | 58 | 58% | 1-1 | 2.12 | 1.24 |
| 2003-04-14 | Javier Vazquez | R | 27 | L 5-3 | vs NYN | 3 | 160 | - | 6.0 | 5 | 3 | 3 | 1 | 1 | 7 | 124 | 44 | 80 | 65% | 1-1 | 2.37 | 1.05 |
| 2003-04-15 | Tony Armas | R | 25 | W 1-2 | vs ATL | 4 | 85 | - | 7.0 | 3 | 0 | 0 | 0 | 2 | 2 | 99 | 35 | 64 | 65% | 2-1 | 1.44 | 0.96 |
| 2003-04-16 | Tomo Ohka | R | 27 | W 2-3 | vs ATL | 3 | 69 | L | 6.0 | 7 | 2 | 2 | 1 | 1 | 1 | 82 | 29 | 53 | 65% | 1-2 | 2.37 | 1.21 |
| 2003-04-17 | Livan Hernandez | R | 28 | W 8-14 | vs ATL | 3 | 183 | - | 6.0 | 8 | 4 | 4 | 2 | 1 | 3 | 87 | 28 | 59 | 68% | 1-0 | 4.24 | 1.41 |
| 2003-04-19 | Zach Day | R | 25 | L 8-7 | vs CIN | 4 | 6 | - | 7.0 | 7 | 3 | 3 | 1 | 1 | 5 | 94 | 33 | 61 | 65% | 1-1 | 2.63 | 1.21 |
| 2003-04-19 | Javier Vazquez | R | 27 | L 9-5 | vs CIN | 4 | 161 | W | 7.0 | 5 | 4 | 4 | 2 | 1 | 11 | 108 | 34 | 74 | 69% | 2-1 | 3.12 | 1.00 |
| 2003-04-20 | Tony Armas | R | 25 | W 5-7 | vs CIN | 5 | 86 | - | 6.0 | 8 | 5 | 5 | 4 | 1 | 6 | 97 | 39 | 58 | 60% | 2-1 | 2.61 | 1.06 |
| 2003-04-22 | Tomo Ohka | R | 27 | L 4-0 | vs ARI | 4 | 70 | W | 6.2 | 6 | 0 | 0 | 0 | 3 | 4 | 88 | 29 | 59 | 67% | 2-2 | 1.80 | 1.28 |
| 2003-04-23 | Livan Hernandez | R | 28 | W 2-6 | vs ARI | 4 | 184 | L | 6.0 | 8 | 4 | 4 | 1 | 2 | 3 | 124 | 51 | 73 | 59% | 1-1 | 4.70 | 1.48 |
| 2003-04-24 | Javier Vazquez | R | 27 | L 1-0 | vs ARI | 5 | 162 | W | 7.0 | 6 | 0 | 0 | 0 | 1 | 9 | 121 | 40 | 81 | 67% | 3-1 | 2.45 | 1.00 |
| 2003-04-25 | Zach Day | R | 25 | L 10-2 | vs HOU | 5 | 7 | W | 8.1 | 6 | 2 | 2 | 0 | 5 | 4 | 125 | 48 | 77 | 62% | 2-1 | 2.45 | 1.21 |
| 2003-04-26 | Claudio Vargas | L | 25 | L 3-2 | vs HOU | 1 | 1 | - | 6.0 | 2 | 1 | 1 | 1 | 4 | 7 | 98 | 39 | 59 | 60% | 0-0 | 1.50 | 1.00 |
| 2003-04-27 | Tomo Ohka | R | 27 | W 3-6 | vs HOU | 5 | 71 | L | 3.0 | 7 | 5 | 5 | 2 | 0 | 1 | 47 | 17 | 30 | 64% | 2-3 | 3.21 | 1.39 |
| 2003-04-29 | Javier Vazquez | R | 27 | W 3-2 | @ MIL | 6 | 163 | - | 7.0 | 3 | 2 | 2 | 2 | 0 | 12 | 125 | 39 | 86 | 69% | 3-1 | 2.48 | 0.90 |
| 2003-04-30 | Livan Hernandez | R | 28 | W 9-5 | @ MIL | 5 | 185 | W | 7.0 | 8 | 3 | 3 | 1 | 2 | 4 | 110 | 42 | 68 | 62% | 2-1 | 4.50 | 1.47 |
| 2003-05-01 | Zach Day | R | 25 | W 5-0 | @ MIL | 6 | 8 | W | 9.0 | 3 | 0 | 0 | 0 | 1 | 5 | 111 | 39 | 72 | 65% | 3-1 | 1.93 | 1.05 |
| 2003-05-02 | Tomo Ohka | R | 27 | L 1-8 | @ SLN | 6 | 72 | L | 0.2 | 6 | 4 | 5 | 1 | 0 | 1 | 28 | 9 | 19 | 68% | 2-4 | 4.66 | 1.55 |
| 2003-05-03 | Claudio Vargas | L | 25 | L 1-3 | @ SLN | 2 | 2 | L | 6.0 | 6 | 3 | 3 | 1 | 0 | 3 | 79 | 29 | 50 | 63% | 0-1 | 3.00 | 1.00 |
| 2003-05-04 | Javier Vazquez | R | 27 | L 2-6 | @ SLN | 7 | 164 | L | 6.0 | 6 | 5 | 5 | 1 | 2 | 6 | 99 | 33 | 66 | 67% | 3-2 | 3.13 | 0.96 |
| 2003-05-06 | Livan Hernandez | R | 28 | L 4-2 | vs SDN | 6 | 186 | W | 7.0 | 7 | 2 | 2 | 0 | 0 | 5 | 102 | 37 | 65 | 64% | 3-1 | 4.14 | 1.38 |
| 2003-05-07 | Zach Day | R | 25 | L 12-9 | vs SDN | 7 | 9 | - | 5.0 | 5 | 6 | 6 | 1 | 4 | 3 | 84 | 37 | 47 | 56% | 3-1 | 2.87 | 1.13 |
| 2003-05-08 | Tomo Ohka | R | 27 | L 12-5 | vs SDN | 7 | 73 | W | 8.0 | 8 | 3 | 3 | 1 | 2 | 2 | 108 | 36 | 72 | 67% | 3-4 | 4.38 | 1.49 |
| 2003-05-09 | Claudio Vargas | L | 25 | W 5-9 | vs LAN | 3 | 3 | - | 5.2 | 7 | 3 | 3 | 1 | 3 | 4 | 109 | 47 | 62 | 57% | 0-1 | 3.50 | 1.22 |
| 2003-05-10 | Javier Vazquez | R | 27 | L 6-5 | vs LAN | 8 | 165 | - | 6.1 | 11 | 5 | 5 | 1 | 1 | 5 | 106 | 39 | 67 | 63% | 3-2 | 3.63 | 1.08 |
| 2003-05-11 | Livan Hernandez | R | 28 | W 3-4 | vs LAN | 7 | 187 | L | 6.1 | 6 | 4 | 3 | 1 | 3 | 5 | 103 | 45 | 58 | 56% | 3-2 | 4.19 | 1.40 |
| 2003-05-12 | Zach Day | R | 25 | W 4-3 | @ SFN | 8 | 10 | W | 6.0 | 8 | 1 | 1 | 0 | 2 | 1 | 98 | 41 | 57 | 58% | 4-1 | 2.72 | 1.19 |
| 2003-05-13 | Tomo Ohka | R | 27 | W 6-4 | @ SFN | 8 | 74 | - | 4.1 | 8 | 4 | 4 | 1 | 2 | 1 | 60 | 22 | 38 | 63% | 3-4 | 4.83 | 1.59 |
| 2003-05-14 | Claudio Vargas | L | 25 | W 6-3 | @ SFN | 4 | 4 | W | 8.0 | 5 | 2 | 2 | 1 | 3 | 1 | 108 | 48 | 60 | 56% | 1-1 | 3.12 | 1.15 |
| 2003-05-15 | Javier Vazquez | R | 27 | L 2-4 | @ COL | 9 | 166 | - | 3.1 | 2 | 0 | 0 | 0 | 1 | 3 | 54 | 20 | 34 | 63% | 3-2 | 3.44 | 1.07 |
| 2003-05-16 | Livan Hernandez | R | 28 | W 4-1 | @ COL | 8 | 188 | - | 7.1 | 5 | 1 | 1 | 0 | 2 | 2 | 95 | 37 | 58 | 61% | 3-2 | 3.71 | 1.31 |
| 2003-05-17 | Zach Day | R | 25 | W 6-4 | @ COL | 9 | 11 | - | 2.0 | 2 | 0 | 0 | 0 | 2 | 0 | 38 | 19 | 19 | 50% | 4-1 | 2.62 | 1.22 |
| 2003-05-18 | Tomo Ohka | R | 27 | L 0-4 | @ COL | 9 | 75 | L | 6.0 | 6 | 2 | 2 | 1 | 3 | 5 | 99 | 39 | 60 | 61% | 3-5 | 4.60 | 1.57 |
| 2003-05-20 | Javier Vazquez | R | 27 | L 6-4 | vs FLO | 10 | 167 | W | 7.0 | 7 | 3 | 2 | 1 | 1 | 3 | 127 | 38 | 89 | 70% | 4-2 | 3.34 | 1.08 |
| 2003-05-21 | Claudio Vargas | L | 25 | L 7-2 | vs FLO | 5 | 5 | W | 6.2 | 6 | 2 | 2 | 1 | 1 | 3 | 114 | 44 | 70 | 61% | 2-1 | 3.18 | 1.21 |
| 2003-05-22 | Livan Hernandez | R | 28 | L 8-2 | vs FLO | 9 | 189 | W | 9.0 | 7 | 2 | 2 | 0 | 1 | 4 | 125 | 47 | 78 | 62% | 4-2 | 3.45 | 1.25 |
| 2003-05-23 | Zach Day | R | 25 | W 2-4 | vs PHI | 10 | 12 | L | 5.0 | 8 | 3 | 3 | 1 | 6 | 4 | 97 | 47 | 50 | 52% | 4-2 | 2.85 | 1.35 |
| 2003-05-24 | Tomo Ohka | R | 27 | L 3-2 | vs PHI | 10 | 76 | - | 7.0 | 4 | 2 | 2 | 2 | 0 | 7 | 99 | 32 | 67 | 68% | 3-5 | 4.33 | 1.44 |
| 2003-05-25 | Javier Vazquez | R | 27 | L 5-3 | vs PHI | 11 | 168 | W | 7.0 | 5 | 2 | 2 | 1 | 1 | 8 | 120 | 47 | 73 | 61% | 5-2 | 3.26 | 1.06 |
| 2003-05-26 | Claudio Vargas | L | 25 | L 1-5 | @ FLO | 6 | 6 | L | 4.0 | 7 | 5 | 5 | 2 | 1 | 4 | 64 | 23 | 41 | 64% | 2-2 | 4.03 | 1.29 |
| 2003-05-28 | Livan Hernandez | R | 28 | L 3-4 | @ FLO | 10 | 190 | L | 6.0 | 11 | 4 | 3 | 0 | 1 | 4 | 113 | 48 | 65 | 58% | 4-3 | 3.55 | 1.32 |
| 2003-05-28 | Zach Day | R | 25 | L 0-6 | @ FLO | 11 | 13 | L | 5.2 | 8 | 6 | 6 | 0 | 2 | 0 | 83 | 37 | 46 | 55% | 4-3 | 3.46 | 1.40 |
| 2003-05-29 | Tomo Ohka | R | 27 | W 3-2 | @ FLO | 11 | 77 | W | 6.0 | 7 | 2 | 2 | 1 | 1 | 2 | 99 | 39 | 60 | 61% | 4-5 | 4.20 | 1.43 |
| 2003-05-30 | Javier Vazquez | R | 27 | L 5-12 | @ PHI | 12 | 169 | L | 5.2 | 5 | 7 | 5 | 1 | 6 | 3 | 131 | 57 | 74 | 56% | 5-3 | 3.60 | 1.12 |
| 2003-06-01 | Livan Hernandez | R | 28 | L 3-4 | @ PHI | 11 | 191 | L | 5.2 | 8 | 4 | 1 | 0 | 1 | 3 | 88 | 29 | 59 | 67% | 4-4 | 3.42 | 1.35 |
| 2003-06-01 | Claudio Vargas | L | 25 | L 1-4 | @ PHI | 7 | 7 | - | 5.0 | 5 | 1 | 1 | 0 | 2 | 5 | 95 | 35 | 60 | 63% | 2-2 | 3.77 | 1.30 |
| 2003-06-03 | Tomo Ohka | R | 27 | W 4-15 | vs ANA | 12 | 78 | L | 2.0 | 11 | 8 | 8 | 3 | 0 | 4 | 55 | 17 | 38 | 69% | 4-6 | 5.23 | 1.56 |
| 2003-06-04 | Sun-Woo Kim | R | 26 | W 2-11 | vs ANA | 1 | 8 | L | 4.1 | 8 | 6 | 6 | 3 | 2 | 0 | 74 | 28 | 46 | 62% | 0-1 | 13.50 | 2.50 |
| 2003-06-05 | Javier Vazquez | R | 27 | L 8-7 | vs ANA | 13 | 170 | - | 7.0 | 3 | 2 | 2 | 2 | 2 | 11 | 107 | 36 | 71 | 66% | 5-3 | 3.51 | 1.09 |
| 2003-06-06 | Livan Hernandez | R | 28 | L 13-10 | vs TEX | 12 | 192 | W | 7.0 | 9 | 5 | 5 | 1 | 3 | 6 | 119 | 48 | 71 | 60% | 5-4 | 3.69 | 1.38 |
| 2003-06-07 | Claudio Vargas | L | 25 | L 5-4 | vs TEX | 8 | 8 | W | 5.0 | 7 | 4 | 0 | 0 | 5 | 3 | 118 | 49 | 69 | 58% | 3-2 | 3.38 | 1.42 |
| 2003-06-08 | Tomo Ohka | R | 27 | L 3-2 | vs TEX | 13 | 79 | - | 6.2 | 9 | 2 | 2 | 2 | 0 | 1 | 91 | 31 | 60 | 66% | 4-6 | 4.96 | 1.54 |
| 2003-06-10 | Javier Vazquez | R | 27 | W 7-3 | @ SEA | 14 | 171 | W | 6.0 | 8 | 3 | 3 | 0 | 2 | 7 | 120 | 39 | 81 | 68% | 6-3 | 3.58 | 1.13 |
| 2003-06-11 | Livan Hernandez | R | 28 | W 3-1 | @ SEA | 13 | 193 | W | 7.0 | 7 | 1 | 1 | 1 | 2 | 3 | 99 | 38 | 61 | 62% | 6-4 | 3.49 | 1.38 |
| 2003-06-12 | Claudio Vargas | L | 25 | L 0-1 | @ SEA | 9 | 9 | L | 6.0 | 4 | 1 | 1 | 1 | 2 | 3 | 118 | 45 | 73 | 62% | 3-3 | 3.17 | 1.37 |
| 2003-06-13 | Tomo Ohka | R | 27 | L 4-8 | @ OAK | 14 | 80 | L | 2.1 | 6 | 7 | 6 | 1 | 1 | 2 | 62 | 23 | 39 | 63% | 4-7 | 5.58 | 1.59 |
| 2003-06-14 | T.J. Tucker | R | 25 | L 4-5 | @ OAK | 1 | 3 | - | 3.0 | 1 | 0 | 0 | 0 | 0 | 2 | 38 | 13 | 25 | 66% | 0-1 | 5.35 | 1.35 |
| 2003-06-15 | Javier Vazquez | R | 27 | L 1-9 | @ OAK | 15 | 172 | L | 6.1 | 5 | 5 | 5 | 2 | 4 | 5 | 114 | 49 | 65 | 57% | 6-4 | 3.83 | 1.15 |
| 2003-06-18 | Livan Hernandez | R | 28 | L 3-7 | @ PIT | 14 | 194 | L | 4.2 | 8 | 6 | 6 | 2 | 0 | 7 | 82 | 30 | 52 | 63% | 6-5 | 3.90 | 1.39 |
| 2003-06-18 | Claudio Vargas | L | 25 | L 3-4 | @ PIT | 10 | 10 | - | 7.1 | 7 | 2 | 2 | 0 | 0 | 5 | 88 | 26 | 62 | 70% | 3-3 | 3.10 | 1.33 |
| 2003-06-19 | Tomo Ohka | R | 27 | W 5-2 | @ PIT | 15 | 81 | W | 6.0 | 6 | 1 | 1 | 0 | 3 | 2 | 102 | 45 | 57 | 56% | 5-7 | 5.26 | 1.58 |
| 2003-06-20 | Javier Vazquez | R | 27 | W 4-8 | vs TOR | 16 | 173 | L | 6.0 | 9 | 5 | 5 | 3 | 1 | 5 | 98 | 34 | 64 | 65% | 6-5 | 4.05 | 1.18 |
| 2003-06-21 | Sun-Woo Kim | R | 26 | L 8-5 | vs TOR | 2 | 9 | - | 4.1 | 8 | 4 | 4 | 2 | 1 | 1 | 64 | 29 | 35 | 55% | 0-1 | 10.00 | 2.11 |
| 2003-06-22 | Livan Hernandez | R | 28 | W 2-4 | vs TOR | 15 | 195 | L | 6.0 | 9 | 4 | 4 | 2 | 1 | 6 | 95 | 35 | 60 | 63% | 6-6 | 4.03 | 1.41 |
| 2003-06-23 | Claudio Vargas | L | 25 | L 3-0 | vs PIT | 11 | 11 | W | 8.0 | 3 | 0 | 0 | 0 | 1 | 2 | 91 | 32 | 59 | 65% | 4-3 | 2.74 | 1.23 |
| 2003-06-24 | Tomo Ohka | R | 27 | L 6-4 | vs PIT | 16 | 82 | W | 6.0 | 4 | 1 | 1 | 0 | 2 | 4 | 81 | 30 | 51 | 63% | 6-7 | 4.99 | 1.54 |
| 2003-06-25 | Javier Vazquez | R | 27 | W 5-6 | vs PIT | 17 | 174 | - | 7.0 | 6 | 3 | 3 | 2 | 1 | 8 | 94 | 33 | 61 | 65% | 6-5 | 4.04 | 1.17 |
| 2003-06-27 | Livan Hernandez | R | 28 | L 5-6 | @ TOR | 16 | 196 | - | 7.0 | 8 | 5 | 5 | 2 | 2 | 1 | 110 | 41 | 69 | 63% | 6-6 | 4.19 | 1.41 |
| 2003-06-28 | Claudio Vargas | L | 25 | W 4-2 | @ TOR | 12 | 12 | W | 6.1 | 4 | 2 | 2 | 1 | 0 | 4 | 91 | 30 | 61 | 67% | 5-3 | 2.72 | 1.17 |
| 2003-06-29 | Tomo Ohka | R | 27 | W 10-2 | @ TOR | 17 | 83 | W | 9.0 | 2 | 2 | 0 | 0 | 0 | 4 | 97 | 28 | 69 | 71% | 7-7 | 4.50 | 1.41 |
| 2003-06-30 | Javier Vazquez | R | 27 | L 1-3 | @ NYN | 18 | 175 | L | 6.0 | 7 | 3 | 3 | 0 | 3 | 5 | 116 | 39 | 77 | 66% | 6-6 | 4.06 | 1.19 |
| 2003-07-01 | Sun-Woo Kim | R | 26 | L 6-7 | @ NYN | 3 | 10 | - | 3.1 | 6 | 2 | 2 | 0 | 4 | 2 | 81 | 43 | 38 | 47% | 0-1 | 9.00 | 2.42 |
| 2003-07-02 | Livan Hernandez | R | 28 | W 11-4 | @ NYN | 17 | 197 | W | 8.0 | 6 | 4 | 2 | 2 | 4 | 8 | 123 | 40 | 83 | 67% | 7-6 | 4.05 | 1.40 |
| 2003-07-03 | Claudio Vargas | L | 25 | W 5-4 | @ ATL | 13 | 13 | W | 7.1 | 8 | 3 | 3 | 1 | 0 | 0 | 84 | 25 | 59 | 70% | 6-3 | 2.82 | 1.17 |
| 2003-07-04 | Tomo Ohka | R | 27 | L 6-8 | @ ATL | 18 | 84 | L | 5.1 | 10 | 6 | 5 | 1 | 1 | 0 | 110 | 45 | 65 | 59% | 7-8 | 4.68 | 1.44 |
| 2003-07-05 | Javier Vazquez | R | 27 | L 2-3 | @ ATL | 19 | 176 | - | 5.0 | 2 | 1 | 1 | 0 | 2 | 5 | 72 | 29 | 43 | 60% | 6-6 | 3.97 | 1.18 |
| 2003-07-06 | Tim Drew | R | 25 | L 5-7 | @ ATL | 1 | 11 | L | 4.2 | 6 | 5 | 5 | 2 | 5 | 3 | 98 | 43 | 55 | 56% | 0-1 | 7.50 | 1.83 |
| 2003-07-07 | Livan Hernandez | R | 28 | L 8-1 | vs PHI | 18 | 198 | W | 9.0 | 7 | 1 | 1 | 1 | 1 | 10 | 124 | 41 | 83 | 67% | 8-6 | 3.83 | 1.36 |
| 2003-07-08 | Claudio Vargas | L | 25 | W 6-13 | vs PHI | 14 | 14 | L | 7.0 | 8 | 6 | 6 | 2 | 3 | 4 | 115 | 48 | 67 | 58% | 6-4 | 3.20 | 1.20 |
| 2003-07-09 | Tomo Ohka | R | 27 | W 0-2 | vs PHI | 19 | 85 | L | 8.0 | 3 | 2 | 2 | 1 | 2 | 5 | 101 | 32 | 69 | 68% | 7-9 | 4.50 | 1.38 |
| 2003-07-11 | Javier Vazquez | R | 27 | W 4-5 | vs FLO | 20 | 177 | - | 7.0 | 7 | 3 | 3 | 2 | 3 | 7 | 125 | 45 | 80 | 64% | 6-6 | 3.96 | 1.19 |
| 2003-07-12 | Livan Hernandez | R | 28 | L 7-1 | vs FLO | 19 | 199 | W | 9.0 | 3 | 1 | 1 | 0 | 3 | 6 | 122 | 49 | 73 | 60% | 9-6 | 3.63 | 1.31 |
| 2003-07-13 | Claudio Vargas | L | 25 | W 4-11 | vs FLO | 15 | 15 | L | 2.2 | 7 | 5 | 5 | 1 | 1 | 1 | 59 | 21 | 38 | 64% | 6-5 | 3.58 | 1.25 |
| 2003-07-17 | Tomo Ohka | R | 27 | L 2-5 | @ PHI | 20 | 86 | - | 6.0 | 8 | 2 | 2 | 0 | 3 | 5 | 100 | 30 | 70 | 70% | 7-9 | 4.42 | 1.40 |
| 2003-07-18 | Javier Vazquez | R | 27 | W 3-1 | @ PHI | 21 | 178 | W | 9.0 | 9 | 1 | 1 | 1 | 0 | 7 | 118 | 35 | 83 | 70% | 7-6 | 3.76 | 1.18 |
| 2003-07-19 | Livan Hernandez | R | 28 | L 3-4 | @ PHI | 20 | 200 | - | 7.1 | 7 | 3 | 3 | 2 | 2 | 6 | 124 | 50 | 74 | 60% | 9-6 | 3.64 | 1.31 |
| 2003-07-20 | Claudio Vargas | L | 25 | L 2-3 | @ PHI | 16 | 16 | L | 6.1 | 6 | 2 | 2 | 0 | 2 | 5 | 117 | 46 | 71 | 61% | 6-6 | 3.55 | 1.25 |
| 2003-07-21 | Eric Knott | L | 29 | L 1-4 | @ FLO | 1 | 2 | L | 5.0 | 6 | 3 | 3 | 0 | 2 | 3 | 72 | 24 | 48 | 67% | 0-1 | 4.50 | 1.50 |
| 2003-07-22 | Tomo Ohka | R | 27 | L 1-9 | @ FLO | 21 | 87 | L | 6.1 | 8 | 5 | 5 | 1 | 2 | 5 | 99 | 31 | 68 | 69% | 7-10 | 4.58 | 1.42 |
| 2003-07-23 | Javier Vazquez | R | 27 | L 5-2 | vs NYN | 22 | 179 | W | 8.0 | 6 | 2 | 2 | 0 | 1 | 11 | 127 | 47 | 80 | 63% | 8-6 | 3.68 | 1.16 |
| 2003-07-24 | Livan Hernandez | R | 28 | L 5-1 | vs NYN | 21 | 201 | W | 7.2 | 7 | 1 | 1 | 0 | 1 | 5 | 115 | 40 | 75 | 65% | 10-6 | 3.50 | 1.29 |
| 2003-07-25 | Claudio Vargas | L | 25 | L 9-8 | vs ATL | 17 | 17 | - | 6.2 | 10 | 4 | 4 | 2 | 0 | 3 | 106 | 34 | 72 | 68% | 6-6 | 3.65 | 1.26 |
| 2003-07-26 | Zach Day | R | 25 | W 4-15 | vs ATL | 12 | 14 | L | 2.0 | 5 | 6 | 6 | 1 | 2 | 0 | 49 | 21 | 28 | 57% | 4-4 | 4.16 | 1.46 |
| 2003-07-27 | Tomo Ohka | R | 27 | L 13-10 | vs ATL | 22 | 88 | - | 5.0 | 14 | 8 | 5 | 1 | 1 | 3 | 98 | 34 | 64 | 65% | 7-10 | 4.76 | 1.48 |
| 2003-07-28 | Javier Vazquez | R | 27 | W 8-10 | vs ATL | 23 | 180 | L | 5.2 | 12 | 8 | 4 | 1 | 1 | 3 | 129 | 41 | 88 | 68% | 8-7 | 3.77 | 1.20 |
| 2003-07-29 | Livan Hernandez | R | 28 | W 1-2 | vs SLN | 22 | 202 | L | 9.0 | 5 | 2 | 2 | 1 | 1 | 8 | 128 | 50 | 78 | 61% | 10-7 | 3.41 | 1.25 |
| 2003-07-30 | Claudio Vargas | L | 25 | W 1-11 | vs SLN | 18 | 18 | L | 0.1 | 3 | 7 | 7 | 0 | 3 | 0 | 28 | 16 | 12 | 43% | 6-7 | 4.25 | 1.32 |
| 2003-07-31 | Zach Day | R | 25 | L 3-2 | vs SLN | 13 | 15 | W | 6.0 | 5 | 1 | 1 | 0 | 1 | 0 | 75 | 28 | 47 | 63% | 5-4 | 3.95 | 1.42 |
| 2003-08-01 | Tomo Ohka | R | 27 | L 8-4 | vs MIL | 23 | 89 | W | 7.0 | 8 | 1 | 1 | 0 | 2 | 8 | 113 | 39 | 74 | 65% | 8-10 | 4.57 | 1.48 |
| 2003-08-02 | Javier Vazquez | R | 27 | L 7-1 | vs MIL | 24 | 181 | W | 9.0 | 8 | 1 | 0 | 0 | 0 | 11 | 118 | 37 | 81 | 69% | 9-7 | 3.55 | 1.18 |
| 2003-08-03 | Livan Hernandez | R | 28 | L 4-2 | vs MIL | 23 | 203 | W | 7.0 | 5 | 1 | 1 | 1 | 1 | 7 | 102 | 35 | 67 | 66% | 11-7 | 3.32 | 1.24 |
| 2003-08-05 | Claudio Vargas | L | 25 | L 5-8 | @ ARI | 19 | 19 | L | 2.0 | 3 | 5 | 5 | 1 | 5 | 1 | 64 | 29 | 35 | 55% | 6-8 | 4.58 | 1.37 |
| 2003-08-06 | Zach Day | R | 25 | L 2-3 | @ ARI | 14 | 16 | - | 6.0 | 9 | 2 | 2 | 1 | 1 | 3 | 97 | 36 | 61 | 63% | 5-4 | 3.87 | 1.44 |
| 2003-08-07 | Tomo Ohka | R | 27 | L 4-5 | @ ARI | 24 | 90 | - | 4.0 | 8 | 4 | 4 | 0 | 2 | 1 | 71 | 28 | 43 | 61% | 8-10 | 4.70 | 1.51 |
| 2003-08-08 | Javier Vazquez | R | 27 | L 1-5 | @ HOU | 25 | 182 | L | 6.0 | 4 | 3 | 3 | 0 | 3 | 3 | 92 | 38 | 54 | 59% | 9-8 | 3.59 | 1.18 |
| 2003-08-09 | Livan Hernandez | R | 28 | W 3-1 | @ HOU | 24 | 204 | W | 9.0 | 6 | 1 | 1 | 0 | 2 | 9 | 125 | 46 | 79 | 63% | 12-7 | 3.20 | 1.22 |
| 2003-08-10 | Scott Downs | L | 25 | L 2-8 | @ HOU | 1 | 20 | L | 3.0 | 5 | 5 | 5 | 2 | 3 | 4 | 67 | 32 | 35 | 52% | 0-1 | 15.00 | 2.67 |
| 2003-08-11 | Zach Day | R | 25 | L 3-1 | vs COL | 15 | 17 | W | 6.0 | 5 | 1 | 1 | 0 | 4 | 7 | 104 | 40 | 64 | 62% | 6-4 | 3.71 | 1.45 |
| 2003-08-12 | Tomo Ohka | R | 27 | W 3-6 | vs COL | 25 | 91 | - | 7.0 | 5 | 3 | 3 | 0 | 2 | 7 | 118 | 43 | 75 | 64% | 8-10 | 4.66 | 1.48 |
| 2003-08-13 | Javier Vazquez | R | 27 | L 6-5 | vs COL | 26 | 183 | W | 6.0 | 6 | 5 | 3 | 2 | 2 | 4 | 95 | 34 | 61 | 64% | 10-8 | 3.62 | 1.19 |
| 2003-08-15 | Livan Hernandez | R | 28 | L 4-1 | vs SFN | 25 | 205 | W | 9.0 | 5 | 1 | 1 | 0 | 1 | 9 | 103 | 32 | 71 | 69% | 13-7 | 3.08 | 1.19 |
| 2003-08-16 | Zach Day | R | 25 | L 4-1 | vs SFN | 16 | 18 | W | 7.0 | 4 | 0 | 0 | 0 | 2 | 4 | 97 | 35 | 62 | 64% | 7-4 | 3.42 | 1.40 |
| 2003-08-17 | Tomo Ohka | R | 27 | L 4-2 | vs SFN | 26 | 92 | - | 6.1 | 8 | 2 | 2 | 0 | 4 | 1 | 87 | 32 | 55 | 63% | 8-10 | 4.59 | 1.50 |
| 2003-08-18 | Javier Vazquez | R | 27 | L 4-0 | vs SFN | 27 | 184 | W | 9.0 | 3 | 0 | 0 | 0 | 3 | 7 | 123 | 42 | 81 | 66% | 11-8 | 3.44 | 1.16 |
| 2003-08-19 | T.J. Tucker | R | 25 | W 7-5 | @ LAN | 2 | 4 | - | 4.0 | 5 | 3 | 3 | 0 | 1 | 4 | 77 | 28 | 49 | 64% | 0-1 | 5.30 | 1.39 |
| 2003-08-20 | Livan Hernandez | R | 28 | L 1-4 | @ LAN | 26 | 206 | - | 7.0 | 6 | 0 | 0 | 0 | 1 | 5 | 100 | 32 | 68 | 68% | 13-7 | 2.97 | 1.18 |
| 2003-08-21 | Zach Day | R | 25 | L 1-2 | @ LAN | 17 | 19 | L | 7.2 | 5 | 2 | 2 | 0 | 1 | 3 | 100 | 37 | 63 | 63% | 7-5 | 3.33 | 1.35 |
| 2003-08-22 | Tomo Ohka | R | 27 | L 3-5 | @ SDN | 27 | 93 | - | 6.0 | 9 | 2 | 2 | 0 | 0 | 1 | 88 | 29 | 59 | 67% | 8-10 | 4.53 | 1.50 |
| 2003-08-23 | Javier Vazquez | R | 27 | L 0-1 | @ SDN | 28 | 185 | - | 9.0 | 3 | 0 | 0 | 0 | 1 | 10 | 98 | 26 | 72 | 73% | 11-8 | 3.27 | 1.13 |
| 2003-08-24 | T.J. Tucker | R | 25 | W 8-4 | @ SDN | 3 | 5 | - | 4.1 | 4 | 2 | 1 | 0 | 0 | 2 | 67 | 20 | 47 | 70% | 0-1 | 5.02 | 1.34 |
| 2003-08-25 | Livan Hernandez | R | 29 | L 12-1 | vs PHI | 27 | 207 | W | 9.0 | 8 | 1 | 1 | 0 | 1 | 9 | 131 | 46 | 85 | 65% | 14-7 | 2.88 | 1.18 |
| 2003-08-26 | Zach Day | R | 25 | L 14-10 | vs PHI | 18 | 20 | - | 3.2 | 6 | 6 | 6 | 2 | 2 | 3 | 68 | 29 | 39 | 57% | 7-5 | 3.72 | 1.38 |
| 2003-08-27 | Tomo Ohka | R | 27 | L 9-6 | vs PHI | 28 | 94 | - | 6.1 | 6 | 4 | 4 | 1 | 0 | 5 | 81 | 25 | 56 | 69% | 8-10 | 4.56 | 1.48 |
| 2003-08-28 | Javier Vazquez | R | 27 | L 4-0 | vs PHI | 29 | 186 | W | 8.0 | 4 | 0 | 0 | 0 | 3 | 10 | 128 | 43 | 85 | 66% | 12-8 | 3.14 | 1.12 |
| 2003-08-29 | T.J. Tucker | R | 25 | L 2-3 | @ FLO | 4 | 6 | - | 6.0 | 5 | 0 | 0 | 0 | 0 | 3 | 83 | 32 | 51 | 61% | 0-1 | 4.57 | 1.30 |
| 2003-08-30 | Livan Hernandez | R | 29 | L 3-4 | @ FLO | 28 | 208 | L | 6.0 | 5 | 3 | 3 | 1 | 3 | 8 | 98 | 36 | 62 | 63% | 14-8 | 2.93 | 1.18 |
| 2003-08-31 | Zach Day | R | 25 | L 3-5 | @ FLO | 19 | 21 | L | 5.0 | 8 | 5 | 5 | 1 | 4 | 1 | 91 | 43 | 48 | 53% | 7-6 | 3.96 | 1.42 |
| 2003-09-01 | Tomo Ohka | R | 27 | L 2-5 | @ FLO | 29 | 95 | L | 6.1 | 10 | 3 | 3 | 0 | 0 | 9 | 111 | 37 | 74 | 67% | 8-11 | 4.55 | 1.48 |
| 2003-09-02 | Javier Vazquez | R | 27 | L 3-5 | @ PHI | 30 | 187 | L | 8.0 | 8 | 5 | 5 | 1 | 3 | 5 | 139 | 46 | 93 | 67% | 12-9 | 3.24 | 1.13 |
| 2003-09-03 | T.J. Tucker | R | 25 | L 3-8 | @ PHI | 5 | 7 | L | 2.2 | 6 | 6 | 1 | 1 | 0 | 1 | 51 | 19 | 32 | 63% | 0-2 | 4.57 | 1.35 |
| 2003-09-05 | Livan Hernandez | R | 29 | L 6-2 | vs FLO | 29 | 209 | W | 8.0 | 7 | 1 | 1 | 0 | 3 | 5 | 119 | 46 | 73 | 61% | 15-8 | 2.86 | 1.18 |
| 2003-09-06 | Tomo Ohka | R | 27 | W 4-14 | vs FLO | 30 | 96 | L | 2.0 | 6 | 9 | 4 | 1 | 2 | 1 | 53 | 22 | 31 | 58% | 8-12 | 4.71 | 1.51 |
| 2003-09-07 | Javier Vazquez | R | 27 | W 1-3 | vs FLO | 31 | 188 | L | 6.0 | 6 | 3 | 3 | 0 | 1 | 7 | 117 | 38 | 79 | 68% | 12-10 | 3.27 | 1.13 |
| 2003-09-09 | Zach Day | R | 25 | W 3-4 | vs CHN | 20 | 22 | L | 6.1 | 9 | 4 | 4 | 0 | 1 | 1 | 101 | 40 | 61 | 60% | 7-7 | 4.07 | 1.43 |
| 2003-09-10 | Livan Hernandez | R | 29 | L 8-4 | vs CHN | 30 | 210 | - | 6.0 | 5 | 4 | 4 | 3 | 1 | 4 | 83 | 26 | 57 | 69% | 15-8 | 2.94 | 1.18 |
| 2003-09-11 | Tomo Ohka | R | 27 | L 3-2 | vs CHN | 31 | 97 | W | 8.0 | 6 | 2 | 2 | 0 | 0 | 4 | 110 | 35 | 75 | 68% | 9-12 | 4.60 | 1.48 |
| 2003-09-12 | T.J. Tucker | R | 25 | L 7-4 | vs NYN | 6 | 8 | W | 6.0 | 6 | 2 | 2 | 0 | 0 | 3 | 84 | 26 | 58 | 69% | 1-2 | 4.44 | 1.32 |
| 2003-09-13 | Javier Vazquez | R | 27 | W 4-5 | vs NYN | 32 | 189 | L | 7.0 | 7 | 5 | 5 | 1 | 2 | 7 | 92 | 28 | 64 | 70% | 12-11 | 3.38 | 1.13 |
| 2003-09-14 | Zach Day | R | 25 | L 7-3 | vs NYN | 21 | 23 | W | 7.0 | 5 | 3 | 2 | 0 | 4 | 2 | 115 | 44 | 71 | 62% | 8-7 | 3.98 | 1.43 |
| 2003-09-15 | Livan Hernandez | R | 29 | W 6-10 | vs ATL | 31 | 211 | L | 3.1 | 5 | 7 | 6 | 1 | 2 | 1 | 73 | 31 | 42 | 58% | 15-9 | 3.15 | 1.19 |
| 2003-09-16 | Tomo Ohka | R | 27 | L 5-4 | vs ATL | 32 | 98 | - | 7.0 | 7 | 2 | 2 | 2 | 1 | 4 | 87 | 28 | 59 | 68% | 9-12 | 4.52 | 1.46 |
| 2003-09-17 | T.J. Tucker | R | 25 | W 4-14 | vs ATL | 7 | 9 | L | 0.2 | 6 | 5 | 5 | 0 | 0 | 1 | 21 | 5 | 16 | 76% | 1-3 | 4.97 | 1.38 |
| 2003-09-18 | Javier Vazquez | R | 27 | W 1-0 | @ NYN | 33 | 190 | W | 7.0 | 3 | 0 | 0 | 0 | 0 | 12 | 123 | 36 | 87 | 71% | 13-11 | 3.27 | 1.11 |
| 2003-09-19 | Zach Day | R | 25 | W 7-1 | @ NYN | 22 | 24 | W | 6.0 | 5 | 1 | 1 | 0 | 3 | 4 | 106 | 47 | 59 | 56% | 9-7 | 3.87 | 1.42 |
| 2003-09-20 | Livan Hernandez | R | 29 | W 4-3 | @ NYN | 32 | 212 | - | 8.0 | 10 | 3 | 3 | 0 | 3 | 9 | 137 | 51 | 86 | 63% | 15-9 | 3.16 | 1.21 |
| 2003-09-21 | Tomo Ohka | R | 28 | W 4-2 | @ NYN | 33 | 99 | - | 7.0 | 4 | 1 | 0 | 0 | 1 | 6 | 103 | 33 | 70 | 68% | 9-12 | 4.36 | 1.44 |
| 2003-09-23 | Javier Vazquez | R | 27 | L 0-2 | @ ATL | 34 | 191 | L | 7.2 | 5 | 2 | 2 | 0 | 2 | 5 | 106 | 40 | 66 | 62% | 13-12 | 3.23 | 1.10 |
| 2003-09-24 | Zach Day | R | 25 | L 1-9 | @ ATL | 23 | 25 | L | 3.1 | 7 | 6 | 6 | 0 | 2 | 3 | 68 | 31 | 37 | 54% | 9-8 | 4.19 | 1.46 |
| 2003-09-26 | Tomo Ohka | R | 28 | W 5-1 | @ CIN | 34 | 100 | W | 9.0 | 5 | 1 | 0 | 0 | 0 | 3 | 90 | 23 | 67 | 74% | 10-12 | 4.16 | 1.40 |
| 2003-09-27 | Livan Hernandez | R | 29 | L 2-4 | @ CIN | 33 | 213 | L | 8.0 | 7 | 4 | 4 | 2 | 3 | 6 | 127 | 47 | 80 | 63% | 15-10 | 3.21 | 1.21 |
| 2003-09-28 | Claudio Vargas | L | 25 | W 2-1 | @ CIN | 20 | 20 | - | 3.0 | 1 | 0 | 0 | 0 | 1 | 2 | 50 | 20 | 30 | 60% | 6-8 | 4.34 | 1.32 |