| Starter | Tm | Tier | Game |
|---|---|---|---|
| George Mullin | DET | 4.27 | 190309232_DET_BOS |
| Willie Sudhoff | BAL | 3.21 | 190309220_BAL_MIN |
| Doc White | CHA | 3.15 | 190309230_CHA_OAK |
| Bill Dinneen | BOS | 2.82 | 190309231_DET_BOS |
| Eddie Plank | OAK | 2.54 | 190309210_DET_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Togie Pittinger | ATL | -4.39 | 190309220_ATL_SLN |
| Fred Mitchell | PHI | -3.69 | 190309222_PHI_CIN |
| Bob Rhoads | CLE | -2.69 | 190309210_CLE_NYA |
| Henry Schmidt | LAN | -1.93 | 190309220_LAN_PIT |
| Clarence Currie | CHN | -1.69 | 190309210_SFN_CHN |
Based on accumulated WAA for this season up to 1903-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.82 | Cy Young | 332.7 | BOS |
| +002+ | 13.24 | George Mullin | 311.7 | DET |
| +004+ | 11.75 | Doc White | 300 | CHA |
| +005+ | 11.57 | Willie Sudhoff | 277.7 | BAL |
| +006+ | 11.39 | Bill Donovan | 296 | DET |
| +008+ | 10.75 | Bill Dinneen | 291 | BOS |
| +009+ | 10.58 | Rube Waddell | 324 | OAK |
| +010+ | 10.5 | Eddie Plank | 316 | OAK |
| +011+ | 8.4 | Frank Kitson | 249.7 | DET |
| +013+ | 7.98 | Ed Siever | 245 | BAL |
| +015+ | 7.78 | Jack Powell | 298.3 | BAL |
| +016+ | 7.4 | Roy Patterson | 272.3 | CHA |
| +017+ | 7.39 | Jack Chesbro | 315.3 | NYA |
| +019+ | 7.04 | Red Donahue | 249 | TOT |
| +023+ | 6.49 | Tom Hughes | 233.7 | BOS |
| +025+ | 5.77 | Chief Bender | 261 | OAK |
| +026+ | 5.6 | Clark Griffith | 213 | NYA |
| +041+ | 3.85 | Christy Mathewson | 367 | SFN |
| +043+ | 3.77 | Highball Wilson | 233.3 | MIN |
| +046+ | 3.69 | Barney Wolfe | 142.3 | NYA |
| +047+ | 3.63 | Joe McGinnity | 424 | SFN |
| +051+ | 3.43 | Rube Kisinger | 110.7 | DET |
| +052+ | 3.12 | Jesse Tannehill | 239.3 | NYA |
| +054+ | 2.76 | Watty Lee | 156.7 | MIN |
| +060+ | 2.33 | George Winter | 170.3 | BOS |
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