| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 4.72 | 190309030_OAK_BOS |
| Bill Donovan | DET | 3.8 | 190309020_CLE_DET |
| Roy Patterson | CHA | 0.84 | 190309020_BAL_CHA |
| Jack Chesbro | NYA | 0.8 | 190309020_NYA_MIN |
| Red Donahue | CLE | 0.72 | 190309020_CLE_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.93 | 190309021_ATL_PHI |
| Togie Pittinger | ATL | -3.96 | 190309021_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 1903-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.62 | Cy Young | 297.7 | BOS |
| +002+ | 11.89 | Earl Moore | 247.7 | CLE |
| +003+ | 11.2 | Bill Donovan | 254 | DET |
| +005+ | 10.51 | Willie Sudhoff | 238.7 | BAL |
| +006+ | 10.32 | George Mullin | 274.7 | DET |
| +007+ | 10.07 | Rube Waddell | 324 | OAK |
| +008+ | 9.73 | Doc White | 255.7 | CHA |
| +009+ | 8.9 | Bill Dinneen | 248 | BOS |
| +010+ | 7.98 | Eddie Plank | 271.7 | OAK |
| +013+ | 6.69 | Frank Kitson | 217.7 | DET |
| +017+ | 6 | Tom Hughes | 195.7 | BOS |
| +019+ | 5.88 | Roy Patterson | 235.7 | CHA |
| +020+ | 5.84 | Jack Chesbro | 274.3 | NYA |
| +021+ | 5.56 | Chief Bender | 232.3 | OAK |
| +022+ | 5.54 | Red Donahue | 210 | TOT |
| +023+ | 5.43 | Jack Powell | 259.3 | BAL |
| +024+ | 5.35 | Ed Siever | 200 | BAL |
| +025+ | 5.2 | Sam Leever | 249 | PIT |
| +026+ | 4.75 | Clark Griffith | 195 | NYA |
| +038+ | 3.55 | Joe McGinnity | 371.7 | SFN |
| +039+ | 3.52 | Patsy Flaherty | 256.7 | CHA |
| +042+ | 3.42 | Barney Wolfe | 115.3 | NYA |
| +043+ | 3.33 | Casey Patten | 254 | MIN |
| +044+ | 3.27 | Highball Wilson | 215.3 | MIN |
| +048+ | 3.19 | Christy Mathewson | 319.7 | SFN |
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