| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 5.59 | 190306090_CHA_OAK |
| Doc White | CHA | 3.99 | 190306080_CHA_OAK |
| Bill Dinneen | BOS | 3.87 | 190306100_DET_BOS |
| Bill Donovan | DET | 3.51 | 190306100_DET_BOS |
| Christy Mathewson | SFN | 3.07 | 190306090_SFN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.27 | 190306100_PHI_PIT |
| War Sanders | SLN | -1.7 | 190306090_SFN_SLN |
| Wiley Piatt | ATL | -1.09 | 190306100_ATL_CHN |
| Gene Wright | CLE | -0.54 | 190306090_CLE_MIN |
| Kaiser Wilhelm | PIT | -0.46 | 190306090_PHI_PIT |
Based on accumulated WAA for this season up to 1903-06-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.49 | Rube Waddell | 130 | OAK |
| +002+ | 4.74 | Cy Young | 120.7 | BOS |
| +003+ | 4.67 | Eddie Plank | 99 | OAK |
| +004+ | 4.61 | Addie Joss | 96 | CLE |
| +005+ | 4.6 | Bill Donovan | 87.7 | DET |
| +006+ | 4.12 | Jack Chesbro | 113.7 | NYA |
| +007+ | 4.01 | Bill Dinneen | 99.7 | BOS |
| +008+ | 3.92 | Doc White | 88 | CHA |
| +009+ | 3.87 | George Mullin | 102 | DET |
| +010+ | 3.58 | Sam Leever | 90 | PIT |
| +012+ | 3.31 | Earl Moore | 71 | CLE |
| +011+ | 3.31 | Jack Sutthoff | 84 | CIN |
| +013+ | 3.14 | Willie Sudhoff | 72 | BAL |
| +015+ | 2.79 | Ed Siever | 66 | BAL |
| +016+ | 2.63 | Roy Patterson | 74 | CHA |
| +019+ | 2.44 | Jack Taylor | 125.3 | CHN |
| +020+ | 2.4 | Joe McGinnity | 133.7 | SFN |
| +022+ | 2.28 | Christy Mathewson | 116 | SFN |
| +027+ | 2.07 | Bill Bernhard | 89 | CLE |
| +028+ | 2.06 | Chief Bender | 91.3 | OAK |
| +030+ | 2.01 | Red Donahue | 87 | BAL |
| +039+ | 1.41 | John Deering | 32.3 | DET |
| +041+ | 1.39 | Jack Powell | 78 | BAL |
| +044+ | 1.34 | Frank Kitson | 69 | DET |
| +049+ | 1.29 | Watty Lee | 62.7 | MIN |
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