| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.09 | 190309190_CHA_BOS |
| George Mullin | DET | 4.27 | 190309190_DET_OAK |
| Eddie Plank | OAK | 2.54 | 190309210_DET_OAK |
| Roy Patterson | CHA | 1.24 | 190309210_CHA_BOS |
| Jack Chesbro | NYA | 1.14 | 190309190_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -4.76 | 190309201_ATL_SLN |
| Fred Mitchell | PHI | -4.07 | 190309201_PHI_CIN |
| Bob Rhoads | CLE | -2.69 | 190309210_CLE_NYA |
| John Malarkey | ATL | -2.68 | 190309202_ATL_SLN |
| Clarence Currie | CHN | -1.69 | 190309210_SFN_CHN |
Based on accumulated WAA for this season up to 1903-09-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.72 | Cy Young | 332.7 | BOS |
| +002+ | 12.85 | George Mullin | 303.7 | DET |
| +004+ | 11.12 | Bill Donovan | 287 | DET |
| +005+ | 11.11 | Willie Sudhoff | 268.7 | BAL |
| +007+ | 11.07 | Doc White | 290.7 | CHA |
| +008+ | 10.54 | Rube Waddell | 324 | OAK |
| +009+ | 10.49 | Bill Dinneen | 282 | BOS |
| +010+ | 10.46 | Eddie Plank | 316 | OAK |
| +011+ | 8.14 | Frank Kitson | 240.7 | DET |
| +012+ | 7.82 | Jack Powell | 290.3 | BAL |
| +015+ | 7.35 | Roy Patterson | 272.3 | CHA |
| +016+ | 7.32 | Jack Chesbro | 315.3 | NYA |
| +017+ | 7.1 | Ed Siever | 236 | BAL |
| +018+ | 6.97 | Red Donahue | 249 | TOT |
| +019+ | 6.88 | Tom Hughes | 224.7 | BOS |
| +025+ | 5.55 | Clark Griffith | 213 | NYA |
| +026+ | 5.05 | Chief Bender | 251 | OAK |
| +029+ | 4.98 | Sam Leever | 285 | PIT |
| +036+ | 4.33 | Barney Wolfe | 133.3 | NYA |
| +041+ | 4.03 | Joe McGinnity | 416 | SFN |
| +047+ | 3.73 | Highball Wilson | 233.3 | MIN |
| +048+ | 3.71 | Christy Mathewson | 367 | SFN |
| +051+ | 3.4 | Rube Kisinger | 110.7 | DET |
| +053+ | 3.11 | Jesse Tannehill | 230.3 | NYA |
| +056+ | 2.83 | George Winter | 162.3 | BOS |
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