| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.12 | 190306160_BAL_OAK |
| Bill Donovan | DET | 3.87 | 190306160_DET_MIN |
| Bill Dinneen | BOS | 3.23 | 190306160_CLE_BOS |
| Doc White | CHA | 2.76 | 190306160_CHA_NYA |
| Sam Leever | PIT | 2.65 | 190306150_CHN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -5.94 | 190306140_ATL_SLN |
| Chick Fraser | PHI | -1.74 | 190306160_SFN_PHI |
| Wiley Piatt | ATL | -1.47 | 190306140_ATL_SLN |
| Gus Dorner | CLE | -0.17 | 190306160_CLE_BOS |
| Bob Ewing | CIN | -0.15 | 190306150_SLN_CIN |
Based on accumulated WAA for this season up to 1903-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.82 | Rube Waddell | 153 | OAK |
| +002+ | 5.39 | Addie Joss | 109.3 | CLE |
| +003+ | 5.38 | Cy Young | 129.7 | BOS |
| +004+ | 5.23 | Eddie Plank | 108 | OAK |
| +005+ | 4.57 | Jack Chesbro | 122.7 | NYA |
| +006+ | 4.43 | Bill Donovan | 95.7 | DET |
| +007+ | 4.27 | Sam Leever | 99 | PIT |
| +008+ | 4.11 | George Mullin | 110 | DET |
| +009+ | 4.03 | Doc White | 97 | CHA |
| +010+ | 3.76 | Earl Moore | 80 | CLE |
| +011+ | 3.69 | Joe McGinnity | 155.7 | SFN |
| +012+ | 3.63 | Bill Dinneen | 108.7 | BOS |
| +013+ | 3.35 | Willie Sudhoff | 86 | BAL |
| +015+ | 2.87 | Christy Mathewson | 125 | SFN |
| +018+ | 2.71 | Jack Sutthoff | 93 | CIN |
| +019+ | 2.52 | Chief Bender | 101.3 | OAK |
| +022+ | 2.31 | Ed Siever | 68 | BAL |
| +024+ | 2.29 | Red Donahue | 95 | BAL |
| +026+ | 2.18 | Roy Patterson | 81.3 | CHA |
| +031+ | 1.97 | Jack Taylor | 142.3 | CHN |
| +034+ | 1.93 | Tom Hughes | 65.7 | BOS |
| +036+ | 1.85 | Bill Bernhard | 89 | CLE |
| +038+ | 1.75 | John Deering | 40.7 | DET |
| +041+ | 1.44 | Frank Kitson | 77.3 | DET |
| +049+ | 1.27 | Tully Sparks | 72 | PHI |
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