| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 5.59 | 190306090_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 |
| Vic Willis | ATL | 2.15 | 190306090_ATL_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.27 | 190306100_PHI_PIT |
| Roy Evans | LAN | -2.85 | 190306110_LAN_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 |
Based on accumulated WAA for this season up to 1903-06-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.42 | Rube Waddell | 130 | OAK |
| +002+ | 4.67 | Cy Young | 120.7 | BOS |
| +003+ | 4.62 | Eddie Plank | 99 | OAK |
| +005+ | 4.56 | Addie Joss | 96 | CLE |
| +004+ | 4.56 | Bill Donovan | 87.7 | DET |
| +006+ | 4.06 | Jack Chesbro | 113.7 | NYA |
| +007+ | 3.95 | Bill Dinneen | 99.7 | BOS |
| +008+ | 3.91 | Earl Moore | 80 | CLE |
| +009+ | 3.88 | Doc White | 88 | CHA |
| +010+ | 3.83 | George Mullin | 102 | DET |
| +011+ | 3.53 | Sam Leever | 90 | PIT |
| +012+ | 3.44 | Willie Sudhoff | 80 | BAL |
| +013+ | 3.27 | Joe McGinnity | 144.7 | SFN |
| +014+ | 3.24 | Jack Sutthoff | 84 | CIN |
| +016+ | 2.77 | Ed Siever | 66 | BAL |
| +018+ | 2.59 | Roy Patterson | 74 | CHA |
| +020+ | 2.38 | Jack Taylor | 125.3 | CHN |
| +025+ | 2.18 | Christy Mathewson | 116 | SFN |
| +027+ | 2.11 | Chief Bender | 92.3 | OAK |
| +028+ | 2.02 | Bill Bernhard | 89 | CLE |
| +029+ | 2 | Tom Hughes | 65.7 | BOS |
| +030+ | 1.99 | Red Donahue | 87 | BAL |
| +040+ | 1.48 | Frank Kitson | 77.3 | DET |
| +042+ | 1.4 | John Deering | 32.3 | DET |
| +044+ | 1.37 | Jack Powell | 78 | BAL |
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