Starting pitchers
| Red Sox | W-L | ERA | IP | H | BB | SO | Avg. |
| RH Pedro Martinez | 14-4 | 2.22 | 186 | 147 | 47 | 206 | .215 |
| vs. Oakland | 0-1 | 3.60 | 5 | 5 | 2 | 7 | .250 |
| RH Tim Wakefield | 11-7 | 4.09 | 202 | 193 | 71 | 169 | .246 |
| vs. Oakland | 0-0 | 4.50 | 12 | 12 | 5 | 12 | .250 |
| RH Derek Lowe | 17-7 | 4.47 | 203 | 216 | 72 | 110 | .272 |
| vs. Oakland | 1-0 | 1.64 | 11 | 7 | 2 | 6 | .184 |
| RH John Burkett | 12-9 | 5.15 | 181 | 202 | 47 | 107 | .281 |
| vs. Oakland | 0-1 | 7.50 | 6 | 7 | 0 | 3 | .292 |
| Athletics | W-L | ERA | IP | H | BB | SO | Avg. |
| RH Tim Hudson | 16-7 | 2.70 | 240 | 197 | 61 | 162 | .223 |
| vs. Boston | 1-0 | 0.00 | 9 | 2 | 1 | 7 | .074 |
| LH Barry Zito | 14-12 | 3.30 | 231 | 186 | 88 | 146 | .219 |
| vs. Boston | 1-0 | 5.06 | 5 | 6 | 2 | 4 | .300 |
| LH Ted Lilly | 12-10 | 4.34 | 178 | 179 | 58 | 147 | .250 |
| vs. Boston | 0-0 | 6.75 | 9 | 13 | 5 | 7 | .317 |
| RH Rich Harden | 5-4 | 4.46 | 74 | 72 | 40 | 67 | .262 |
| vs. Boston | 0-1 | 27.00 | 2 | 4 | 7 | 2 | .364 |