| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.59 | 190306130_BAL_BOS |
| Doc White | CHA | 3.58 | 190306130_CHA_MIN |
| Christy Mathewson | SFN | 2.81 | 190306130_SFN_CIN |
| Sam Leever | PIT | 2.65 | 190306150_CHN_PIT |
| Eddie Plank | OAK | 2.19 | 190306150_BAL_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -5.94 | 190306140_ATL_SLN |
| Wiley Piatt | ATL | -1.47 | 190306140_ATL_SLN |
| Al Orth | MIN | -0.52 | 190306130_CHA_MIN |
| Bill Duggleby | PHI | -0.51 | 190306140_PHI_CHN |
| Bob Ewing | CIN | -0.15 | 190306150_SLN_CIN |
Based on accumulated WAA for this season up to 1903-06-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.49 | Rube Waddell | 144 | OAK |
| +002+ | 5.46 | Cy Young | 129.7 | BOS |
| +003+ | 5.45 | Addie Joss | 109.3 | CLE |
| +004+ | 5.29 | Eddie Plank | 108 | OAK |
| +005+ | 4.64 | Jack Chesbro | 122.7 | NYA |
| +006+ | 4.55 | Bill Donovan | 87.7 | DET |
| +007+ | 4.33 | Sam Leever | 99 | PIT |
| +008+ | 4.15 | George Mullin | 110 | DET |
| +009+ | 3.9 | Bill Dinneen | 99.7 | BOS |
| +010+ | 3.8 | Earl Moore | 80 | CLE |
| +011+ | 3.45 | Willie Sudhoff | 80 | BAL |
| +012+ | 3.33 | Doc White | 89 | CHA |
| +013+ | 3.26 | Joe McGinnity | 144.7 | SFN |
| +014+ | 2.97 | Christy Mathewson | 125 | SFN |
| +017+ | 2.78 | Ed Siever | 66 | BAL |
| +018+ | 2.76 | Jack Sutthoff | 93 | CIN |
| +019+ | 2.58 | Chief Bender | 101.3 | OAK |
| +020+ | 2.55 | Jack Taylor | 134.3 | CHN |
| +025+ | 2.32 | Red Donahue | 95 | BAL |
| +027+ | 2.2 | Roy Patterson | 81.3 | CHA |
| +030+ | 1.97 | Tom Hughes | 65.7 | BOS |
| +036+ | 1.9 | Bill Bernhard | 89 | CLE |
| +038+ | 1.76 | John Deering | 40.7 | DET |
| +041+ | 1.47 | Frank Kitson | 77.3 | DET |
| +046+ | 1.36 | Tully Sparks | 72 | PHI |
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