| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.97 | 190307290_NYA_BOS |
| Rube Waddell | OAK | 5.55 | 190307302_MIN_OAK |
| Bill Donovan | DET | 4.98 | 190307300_BAL_DET |
| Doc White | CHA | 2.83 | 190307300_CLE_CHA |
| Addie Joss | CLE | 1.78 | 190307310_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Poole | CIN | -1.59 | 190307300_CHN_CIN |
| Henry Schmidt | LAN | -1.59 | 190307290_PHI_LAN |
| Mordecai Brown | SLN | -1.3 | 190307290_SLN_CHN |
| Bill Duggleby | PHI | -1.02 | 190307310_LAN_PHI |
| Gene Wright | CLE | -0.98 | 190307300_CLE_CHA |
Based on accumulated WAA for this season up to 1903-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.92 | Bill Donovan | 191.7 | DET |
| +002+ | 9.09 | Rube Waddell | 259 | OAK |
| +003+ | 8.74 | Cy Young | 215.7 | BOS |
| +004+ | 8.18 | Earl Moore | 168.7 | CLE |
| +005+ | 7.89 | George Mullin | 197 | DET |
| +006+ | 7.82 | Willie Sudhoff | 177.3 | BAL |
| +007+ | 7.79 | Addie Joss | 210.7 | CLE |
| +008+ | 7.38 | Doc White | 190.3 | CHA |
| +009+ | 7.2 | Bill Dinneen | 184.7 | BOS |
| +010+ | 6.98 | Eddie Plank | 198.3 | OAK |
| +011+ | 6.86 | Bill Bernhard | 165.7 | CLE |
| +014+ | 4.96 | Chief Bender | 178.3 | OAK |
| +018+ | 4.25 | Tom Hughes | 128.7 | BOS |
| +019+ | 4.18 | Ed Siever | 140.3 | BAL |
| +022+ | 3.67 | Christy Mathewson | 227.3 | SFN |
| +023+ | 3.62 | Frank Kitson | 141.7 | DET |
| +025+ | 3.43 | Roy Patterson | 148 | CHA |
| +026+ | 3.42 | Clark Griffith | 150.7 | NYA |
| +029+ | 3.31 | Sam Leever | 178 | PIT |
| +030+ | 3.28 | Jack Chesbro | 205.3 | NYA |
| +041+ | 2.57 | Highball Wilson | 155.3 | MIN |
| +045+ | 2.44 | Casey Patten | 211.7 | MIN |
| +052+ | 1.96 | Watty Lee | 81.7 | MIN |
| +059+ | 1.62 | Jesse Tannehill | 156.3 | NYA |
| +060+ | 1.48 | Patsy Flaherty | 183 | CHA |
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