| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 5.87 | 190306050_DET_OAK |
| Bill Dinneen | BOS | 3.56 | 190306060_CHA_BOS |
| Bill Donovan | DET | 3.08 | 190306050_DET_OAK |
| Christy Mathewson | SFN | 2.9 | 190306040_SFN_CHN |
| Vic Willis | ATL | 2.64 | 190306060_ATL_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -4.47 | 190306040_LAN_SLN |
| Kaiser Wilhelm | PIT | -0.88 | 190306040_ATL_PIT |
| Oscar Jones | LAN | -0.63 | 190306060_LAN_SLN |
| Wiley Piatt | ATL | -0.6 | 190306040_ATL_PIT |
| Norwood Gibson | BOS | -0.29 | 190306050_CHA_BOS |
Based on accumulated WAA for this season up to 1903-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.75 | Cy Young | 109.7 | BOS |
| +001+ | 4.75 | Eddie Plank | 99 | OAK |
| +003+ | 4.74 | Rube Waddell | 121 | OAK |
| +004+ | 4.07 | Bill Dinneen | 93.7 | BOS |
| +005+ | 4.05 | Addie Joss | 87 | CLE |
| +006+ | 3.83 | Doc White | 80 | CHA |
| +007+ | 3.73 | Bill Donovan | 78.7 | DET |
| +008+ | 3.56 | Jack Chesbro | 104.7 | NYA |
| +009+ | 3.38 | Earl Moore | 71 | CLE |
| +010+ | 3.17 | Willie Sudhoff | 72 | BAL |
| +011+ | 3 | George Mullin | 93 | DET |
| +012+ | 2.82 | Ed Siever | 66 | BAL |
| +013+ | 2.8 | Sam Leever | 81 | PIT |
| +015+ | 2.64 | Roy Patterson | 74 | CHA |
| +016+ | 2.56 | Jack Sutthoff | 75 | CIN |
| +017+ | 2.5 | Joe McGinnity | 124.7 | SFN |
| +018+ | 2.34 | Bill Bernhard | 80 | CLE |
| +021+ | 2.22 | Christy Mathewson | 110 | SFN |
| +027+ | 1.9 | Jack Taylor | 116.3 | CHN |
| +032+ | 1.72 | Red Donahue | 79 | BAL |
| +036+ | 1.5 | Chief Bender | 82.3 | OAK |
| +038+ | 1.42 | Jack Powell | 78 | BAL |
| +039+ | 1.36 | Watty Lee | 62.7 | MIN |
| +041+ | 1.34 | Frank Kitson | 69 | DET |
| +044+ | 1.29 | Bob Wicker | 80.7 | TOT |
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