| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 4.72 | 190309030_OAK_BOS |
| Willie Sudhoff | BAL | 3.29 | 190309050_DET_BAL |
| George Mullin | DET | 2.65 | 190309030_CLE_DET |
| Roy Patterson | CHA | 1.05 | 190309050_CLE_CHA |
| 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 1903-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.68 | Cy Young | 297.7 | BOS |
| +002+ | 11.94 | Earl Moore | 247.7 | CLE |
| +003+ | 11.23 | Bill Donovan | 254 | DET |
| +005+ | 10.35 | George Mullin | 274.7 | DET |
| +006+ | 10.16 | Rube Waddell | 324 | OAK |
| +007+ | 9.87 | Willie Sudhoff | 247.7 | BAL |
| +008+ | 9.76 | Doc White | 255.7 | CHA |
| +009+ | 9.66 | Bill Dinneen | 256 | BOS |
| +010+ | 8.06 | Eddie Plank | 271.7 | OAK |
| +014+ | 6.71 | Frank Kitson | 217.7 | DET |
| +016+ | 6.49 | Roy Patterson | 244.7 | CHA |
| +017+ | 6.04 | Tom Hughes | 195.7 | BOS |
| +020+ | 5.88 | Jack Chesbro | 274.3 | NYA |
| +021+ | 5.63 | Chief Bender | 232.3 | OAK |
| +022+ | 5.57 | Red Donahue | 210 | TOT |
| +023+ | 5.46 | Jack Powell | 259.3 | BAL |
| +024+ | 5.38 | Ed Siever | 200 | BAL |
| +025+ | 5.23 | Sam Leever | 249 | PIT |
| +027+ | 4.78 | Clark Griffith | 195 | NYA |
| +038+ | 3.7 | Joe McGinnity | 371.7 | SFN |
| +040+ | 3.6 | Barney Wolfe | 124.3 | NYA |
| +041+ | 3.59 | Christy Mathewson | 325 | SFN |
| +042+ | 3.55 | Patsy Flaherty | 256.7 | CHA |
| +045+ | 3.38 | Casey Patten | 254 | MIN |
| +046+ | 3.32 | Highball Wilson | 215.3 | MIN |
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