| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 4.58 | 190308110_OAK_BOS |
| Doc White | CHA | 4.45 | 190308130_OAK_CHA |
| Earl Moore | CLE | 3.46 | 190308131_NYA_CLE |
| Bill Dinneen | BOS | 2.84 | 190308131_BOS_DET |
| George Mullin | DET | 2.03 | 190308131_BOS_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Togie Pittinger | ATL | -3.49 | 190308121_CHN_ATL |
| Henry Schmidt | LAN | -2.76 | 190308130_PIT_LAN |
| Mordecai Brown | SLN | -1.18 | 190308131_SLN_SFN |
| Dummy Taylor | SFN | -0.78 | 190308120_SLN_SFN |
| Al Orth | MIN | -0.23 | 190308110_MIN_NYA |
Based on accumulated WAA for this season up to 1903-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.4 | Earl Moore | 203.7 | CLE |
| +002+ | 9.86 | Cy Young | 239.7 | BOS |
| +003+ | 9.57 | Doc White | 226.3 | CHA |
| +004+ | 9.49 | Bill Donovan | 209 | DET |
| +005+ | 9.46 | Rube Waddell | 284 | OAK |
| +006+ | 9.33 | Addie Joss | 247.7 | CLE |
| +007+ | 9.19 | Willie Sudhoff | 195.3 | BAL |
| +008+ | 8.2 | George Mullin | 227 | DET |
| +009+ | 8.18 | Bill Dinneen | 211.7 | BOS |
| +010+ | 7.41 | Eddie Plank | 219.3 | OAK |
| +013+ | 6.08 | Chief Bender | 195.3 | OAK |
| +014+ | 6.06 | Tom Hughes | 155.7 | BOS |
| +015+ | 5.93 | Frank Kitson | 174.7 | DET |
| +019+ | 5.05 | Christy Mathewson | 265.3 | SFN |
| +020+ | 4.92 | Ed Siever | 165 | BAL |
| +021+ | 4.86 | Jack Chesbro | 232.3 | NYA |
| +022+ | 4.83 | Red Donahue | 160 | TOT |
| +025+ | 4.02 | Clark Griffith | 159.7 | NYA |
| +026+ | 3.82 | Roy Patterson | 178 | CHA |
| +031+ | 3.26 | Joe McGinnity | 299.7 | SFN |
| +045+ | 2.66 | Casey Patten | 228 | MIN |
| +046+ | 2.65 | Highball Wilson | 179.3 | MIN |
| +047+ | 2.54 | Jesse Tannehill | 171.3 | NYA |
| +053+ | 1.96 | Watty Lee | 81.7 | MIN |
| +055+ | 1.92 | Sam Leever | 193 | PIT |
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