| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.2 | 190309150_NYA_BOS |
| Doc White | CHA | 3.44 | 190309132_CHA_BAL |
| Eddie Plank | OAK | 2.36 | 190309150_OAK_MIN |
| Ed Siever | BAL | 1.21 | 190309132_CHA_BAL |
| Jack Chesbro | NYA | 0.99 | 190309140_NYA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -4.55 | 190309142_SFN_SLN |
| Togie Pittinger | ATL | -3.76 | 190309140_ATL_CIN |
| Dummy Taylor | SFN | -1.45 | 190309141_SFN_SLN |
| Bill Duggleby | PHI | -1.36 | 190309140_PHI_PIT |
| Ned Garvin | LAN | -1.22 | 190309130_LAN_CHN |
Based on accumulated WAA for this season up to 1903-09-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.11 | Cy Young | 323.7 | BOS |
| +002+ | 12.09 | Bill Donovan | 271 | DET |
| +005+ | 11.02 | Willie Sudhoff | 265.7 | BAL |
| +006+ | 10.76 | Doc White | 282.7 | CHA |
| +007+ | 10.58 | Bill Dinneen | 273 | BOS |
| +009+ | 10.05 | Rube Waddell | 324 | OAK |
| +010+ | 8.66 | Eddie Plank | 298.7 | OAK |
| +012+ | 7.45 | Tom Hughes | 222.7 | BOS |
| +013+ | 7.4 | Frank Kitson | 232.7 | DET |
| +015+ | 6.98 | Red Donahue | 235 | TOT |
| +017+ | 6.6 | Jack Powell | 277.3 | BAL |
| +018+ | 6.54 | Roy Patterson | 260.7 | CHA |
| +019+ | 6.5 | Ed Siever | 229 | BAL |
| +021+ | 6.27 | Jack Chesbro | 306.3 | NYA |
| +024+ | 5.58 | Chief Bender | 249.3 | OAK |
| +025+ | 5.49 | Clark Griffith | 204 | NYA |
| +028+ | 4.89 | Sam Leever | 276 | PIT |
| +041+ | 3.71 | Joe McGinnity | 398.3 | SFN |
| +048+ | 3.31 | Rube Kisinger | 102.7 | DET |
| +049+ | 3.29 | Highball Wilson | 232.3 | MIN |
| +051+ | 3.17 | Ed Killian | 43 | CLE |
| +055+ | 2.76 | Jesse Tannehill | 230.3 | NYA |
| +056+ | 2.73 | Christy Mathewson | 348 | SFN |
| +059+ | 2.41 | Watty Lee | 134.3 | MIN |
| +060+ | 2.33 | George Winter | 154.3 | BOS |
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