| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Donovan | DET | 4.25 | 190309062_DET_BAL |
| Willie Sudhoff | BAL | 3.29 | 190309050_DET_BAL |
| Doc White | CHA | 3.22 | 190309060_CLE_CHA |
| Bill Dinneen | BOS | 2.51 | 190309050_OAK_BOS |
| Sam Leever | PIT | 0.68 | 190309040_CIN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.78 | 190309041_ATL_PHI |
| Togie Pittinger | ATL | -3.53 | 190309041_ATL_PHI |
| Henry Schmidt | LAN | -3.19 | 190309042_LAN_SFN |
| Bob Rhoads | CLE | -2.32 | 190309040_CLE_DET |
| Ed Poole | CIN | -1.65 | 190309040_CIN_PIT |
Based on accumulated WAA for this season up to 1903-09-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.61 | Cy Young | 297.7 | BOS |
| +003+ | 11.29 | Bill Donovan | 262 | DET |
| +004+ | 10.83 | George Mullin | 282.7 | DET |
| +006+ | 10.56 | Doc White | 265.7 | CHA |
| +007+ | 10.09 | Rube Waddell | 324 | OAK |
| +008+ | 9.8 | Willie Sudhoff | 247.7 | BAL |
| +009+ | 9.59 | Bill Dinneen | 256 | BOS |
| +010+ | 7.99 | Eddie Plank | 271.7 | OAK |
| +013+ | 6.69 | Frank Kitson | 217.7 | DET |
| +016+ | 6.42 | Roy Patterson | 244.7 | CHA |
| +017+ | 5.99 | Tom Hughes | 195.7 | BOS |
| +020+ | 5.81 | Jack Chesbro | 274.3 | NYA |
| +021+ | 5.57 | Chief Bender | 232.3 | OAK |
| +022+ | 5.51 | Red Donahue | 210 | TOT |
| +023+ | 5.39 | Jack Powell | 259.3 | BAL |
| +024+ | 5.32 | Ed Siever | 200 | BAL |
| +025+ | 5.17 | Sam Leever | 249 | PIT |
| +027+ | 4.73 | Clark Griffith | 195 | NYA |
| +039+ | 3.61 | Joe McGinnity | 371.7 | SFN |
| +040+ | 3.57 | Barney Wolfe | 124.3 | NYA |
| +042+ | 3.51 | Christy Mathewson | 325 | SFN |
| +044+ | 3.47 | Patsy Flaherty | 256.7 | CHA |
| +045+ | 3.32 | Casey Patten | 254 | MIN |
| +047+ | 3.27 | Highball Wilson | 215.3 | MIN |
| +050+ | 3.01 | Jesse Tannehill | 211.3 | NYA |
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