| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 4.72 | 190309030_OAK_BOS |
| Bill Donovan | DET | 3.8 | 190309020_CLE_DET |
| Eddie Plank | OAK | 2.1 | 190309011_NYA_OAK |
| Roy Patterson | CHA | 0.84 | 190309020_BAL_CHA |
| Jack Chesbro | NYA | 0.8 | 190309020_NYA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.93 | 190309021_ATL_PHI |
| Togie Pittinger | ATL | -3.96 | 190309021_ATL_PHI |
| Henry Schmidt | LAN | -3.66 | 190309012_ATL_LAN |
| Mordecai Brown | SLN | -1.3 | 190309030_SLN_CHN |
| Ed Doheny | PIT | -1.08 | 190309030_CIN_PIT |
Based on accumulated WAA for this season up to 1903-09-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.59 | Cy Young | 297.7 | BOS |
| +002+ | 11.84 | Earl Moore | 247.7 | CLE |
| +003+ | 11.18 | Bill Donovan | 254 | DET |
| +004+ | 10.62 | Addie Joss | 283.7 | CLE |
| +005+ | 10.48 | Willie Sudhoff | 238.7 | BAL |
| +006+ | 10.3 | George Mullin | 274.7 | DET |
| +007+ | 10.03 | Rube Waddell | 324 | OAK |
| +008+ | 9.7 | Doc White | 255.7 | CHA |
| +009+ | 8.87 | Bill Dinneen | 248 | BOS |
| +010+ | 7.95 | Eddie Plank | 271.7 | OAK |
| +015+ | 6.07 | Frank Kitson | 208.7 | DET |
| +017+ | 5.98 | Tom Hughes | 195.7 | BOS |
| +019+ | 5.86 | Roy Patterson | 235.7 | CHA |
| +020+ | 5.77 | Jack Chesbro | 274.3 | NYA |
| +021+ | 5.54 | Chief Bender | 232.3 | OAK |
| +022+ | 5.51 | Red Donahue | 210 | TOT |
| +023+ | 5.4 | Jack Powell | 259.3 | BAL |
| +024+ | 5.33 | Ed Siever | 200 | BAL |
| +025+ | 4.7 | Clark Griffith | 195 | NYA |
| +027+ | 4.59 | Sam Leever | 240 | PIT |
| +037+ | 3.49 | Patsy Flaherty | 256.7 | CHA |
| +040+ | 3.39 | Barney Wolfe | 115.3 | NYA |
| +042+ | 3.3 | Joe McGinnity | 369.7 | SFN |
| +045+ | 3.23 | Highball Wilson | 215.3 | MIN |
| +046+ | 3.13 | Christy Mathewson | 319.7 | SFN |
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