| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 6.66 | 190305130_BOS_CLE |
| Rube Waddell | OAK | 5.23 | 190305110_OAK_CHA |
| Bill Donovan | DET | 4.09 | 190305130_NYA_DET |
| Doc White | CHA | 3.25 | 190305110_OAK_CHA |
| Sam Leever | PIT | 2.84 | 190305110_CIN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gene Wright | CLE | -1.11 | 190305120_BOS_CLE |
| Jack Harper | CIN | -1.08 | 190305130_CIN_SFN |
| Fred Mitchell | PHI | -1.03 | 190305130_PIT_PHI |
| Mordecai Brown | SLN | -1.01 | 190305120_SLN_ATL |
| Henry Thielman | LAN | -0.72 | 190305120_CHN_LAN |
Based on accumulated WAA for this season up to 1903-05-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.87 | Eddie Plank | 57 | OAK |
| +002+ | 3.03 | Addie Joss | 43 | CLE |
| +003+ | 2.84 | Roy Patterson | 44 | CHA |
| +004+ | 2.65 | Cy Young | 60.3 | BOS |
| +006+ | 2.54 | Bill Donovan | 44.7 | DET |
| +007+ | 2.47 | George Mullin | 44 | DET |
| +008+ | 2.41 | Rube Waddell | 55 | OAK |
| +009+ | 2.11 | Jack Sutthoff | 41 | CIN |
| +010+ | 2.1 | Patsy Flaherty | 49.3 | CHA |
| +011+ | 1.97 | Jack Chesbro | 53 | NYA |
| +013+ | 1.77 | Ed Siever | 36 | BAL |
| +015+ | 1.67 | Earl Moore | 26 | CLE |
| +016+ | 1.66 | Doc White | 32 | CHA |
| +017+ | 1.65 | Henry Schmidt | 61 | LAN |
| +019+ | 1.51 | Joe McGinnity | 57.7 | SFN |
| +020+ | 1.46 | Sam Leever | 38 | PIT |
| +021+ | 1.42 | Chief Bender | 49.3 | OAK |
| +024+ | 1.35 | Barney Wolfe | 19 | NYA |
| XXXXX | 1.1 | Tom Hughes | 29 | BOS |
| XXXXX | 1.03 | Jack Powell | 37 | BAL |
| XXXXX | 0.96 | Oscar Jones | 56 | LAN |
| XXXXX | 0.95 | Mal Eason | 29.3 | DET |
| XXXXX | 0.87 | Jack Taylor | 62 | CHN |
| XXXXX | 0.82 | Bill Dinneen | 46.7 | BOS |
| XXXXX | 0.81 | Bill Duggleby | 48.3 | PHI |
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