| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 7.09 | 190305090_NYA_BOS |
| Ed Siever | BAL | 5.05 | 190305100_BAL_CHA |
| Rube Waddell | OAK | 4.95 | 190305080_MIN_OAK |
| Bill Donovan | DET | 3.61 | 190305090_DET_CLE |
| Vic Willis | ATL | 2.63 | 190305090_ATL_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Poole | CIN | -1.63 | 190305090_CIN_PIT |
| Mike O'Neill | SLN | -1.63 | 190305101_CHN_SLN |
| Alex Hardy | CHN | -0.59 | 190305090_CHN_SLN |
| Wiley Piatt | ATL | -0.49 | 190305080_ATL_LAN |
| Kaiser Wilhelm | PIT | -0.42 | 190305090_CIN_PIT |
Based on accumulated WAA for this season up to 1903-05-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.12 | Eddie Plank | 48 | OAK |
| +002+ | 3.09 | George Mullin | 35 | DET |
| +004+ | 2.85 | Jack Chesbro | 45 | NYA |
| +005+ | 2.39 | Roy Patterson | 34 | CHA |
| +006+ | 2.28 | Cy Young | 52 | BOS |
| +007+ | 2.18 | Addie Joss | 34 | CLE |
| +008+ | 1.98 | Patsy Flaherty | 40.3 | CHA |
| +009+ | 1.9 | Bill Donovan | 35.7 | DET |
| +010+ | 1.77 | Ed Siever | 36 | BAL |
| +011+ | 1.74 | Earl Moore | 26 | CLE |
| +012+ | 1.65 | Rube Waddell | 44 | OAK |
| +013+ | 1.44 | Jack Sutthoff | 32 | CIN |
| +014+ | 1.43 | Henry Schmidt | 52 | LAN |
| +016+ | 1.37 | Barney Wolfe | 19 | NYA |
| +018+ | 1.35 | Tom Hughes | 21 | BOS |
| XXXXX | 1.23 | Chief Bender | 40 | OAK |
| XXXXX | 1.23 | Sam Leever | 29 | PIT |
| XXXXX | 1.11 | Highball Wilson | 26 | MIN |
| XXXXX | 1.07 | Doc White | 21 | CHA |
| XXXXX | 1.03 | Chappie McFarland | 20 | SLN |
| XXXXX | 1.01 | Mal Eason | 29.3 | DET |
| XXXXX | 0.97 | Oscar Jones | 56 | LAN |
| XXXXX | 0.93 | Bill Dinneen | 37 | BOS |
| XXXXX | 0.9 | Joe McGinnity | 48.7 | SFN |
| XXXXX | 0.75 | Jack Powell | 28 | BAL |
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