| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Moore | CLE | 4.6 | 190308311_CLE_BAL |
| Willie Sudhoff | BAL | 3.3 | 190308302_CLE_BAL |
| Doc White | CHA | 3 | 190308302_DET_CHA |
| George Mullin | DET | 2.42 | 190308301_DET_CHA |
| Bill Dinneen | BOS | 2.39 | 190308311_BOS_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Henry Schmidt | LAN | -3.66 | 190309012_ATL_LAN |
| Chick Fraser | PHI | -3.08 | 190308311_PHI_SFN |
| Mordecai Brown | SLN | -1.37 | 190308300_PIT_SLN |
| Ed Doheny | PIT | -1.33 | 190308300_PIT_SLN |
| Carl Lundgren | CHN | -0.83 | 190309010_CIN_CHN |
Based on accumulated WAA for this season up to 1903-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.19 | Cy Young | 285.7 | BOS |
| +002+ | 12 | Earl Moore | 247.7 | CLE |
| +003+ | 10.98 | Bill Donovan | 245 | DET |
| +004+ | 10.8 | Addie Joss | 283.7 | CLE |
| +005+ | 10.6 | Willie Sudhoff | 238.7 | BAL |
| +006+ | 10.29 | Rube Waddell | 324 | OAK |
| +007+ | 9.84 | Doc White | 255.7 | CHA |
| +008+ | 9.72 | George Mullin | 263.7 | DET |
| +009+ | 9.07 | Bill Dinneen | 248 | BOS |
| +010+ | 8.16 | Eddie Plank | 271.7 | OAK |
| +015+ | 6.23 | Frank Kitson | 208.7 | DET |
| +016+ | 6.13 | Tom Hughes | 195.7 | BOS |
| +019+ | 5.72 | Chief Bender | 232.3 | OAK |
| +020+ | 5.6 | Jack Chesbro | 266.3 | NYA |
| +021+ | 5.4 | Roy Patterson | 226.7 | CHA |
| +022+ | 5.33 | Red Donahue | 202 | TOT |
| +023+ | 5.23 | Jack Powell | 251.3 | BAL |
| +024+ | 4.78 | Clark Griffith | 195 | NYA |
| +025+ | 4.72 | Sam Leever | 240 | PIT |
| +027+ | 4.62 | Ed Siever | 191 | BAL |
| +037+ | 3.7 | Watty Lee | 122.3 | MIN |
| +040+ | 3.44 | Barney Wolfe | 115.3 | NYA |
| +041+ | 3.35 | Christy Mathewson | 310.7 | SFN |
| +047+ | 3.05 | Patsy Flaherty | 247.7 | CHA |
| +048+ | 2.95 | Highball Wilson | 206.3 | MIN |
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