| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.56 | 190306240_OAK_BAL |
| Cy Young | BOS | 5.49 | 190306230_BOS_DET |
| Bill Donovan | DET | 3.47 | 190306230_BOS_DET |
| Doc White | CHA | 3.24 | 190306250_NYA_CHA |
| Ed Siever | BAL | 2.03 | 190306250_BOS_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -5.03 | 190306252_PIT_PHI |
| Wiley Piatt | ATL | -3.51 | 190306251_SLN_ATL |
| Bob Rhoads | SLN | -1.18 | 190306230_SLN_ATL |
| Bill Phillips | CIN | -0.67 | 190306252_CIN_SFN |
| Ned Garvin | LAN | -0.66 | 190306252_CHN_LAN |
Based on accumulated WAA for this season up to 1903-06-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.13 | Rube Waddell | 169.3 | OAK |
| +002+ | 6.36 | Addie Joss | 126.3 | CLE |
| +003+ | 6 | Cy Young | 138.7 | BOS |
| +004+ | 5.55 | Earl Moore | 108 | CLE |
| +005+ | 5.19 | George Mullin | 126 | DET |
| +006+ | 5.1 | Eddie Plank | 126 | OAK |
| +007+ | 4.89 | Bill Donovan | 104.7 | DET |
| +008+ | 4.54 | Sam Leever | 108 | PIT |
| +009+ | 4.39 | Bill Dinneen | 125.7 | BOS |
| +010+ | 4.24 | Doc White | 114.3 | CHA |
| +011+ | 4.13 | Jack Chesbro | 131.7 | NYA |
| +012+ | 3.85 | Willie Sudhoff | 95 | BAL |
| +013+ | 3.78 | Roy Patterson | 109 | CHA |
| +014+ | 3.29 | Joe McGinnity | 174.7 | SFN |
| +015+ | 3.08 | Chief Bender | 122.3 | OAK |
| +023+ | 2.57 | Jack Sutthoff | 102 | CIN |
| +024+ | 2.53 | Ed Siever | 76 | BAL |
| +026+ | 2.43 | Tom Hughes | 83.7 | BOS |
| +028+ | 2.3 | John Deering | 49.7 | DET |
| +032+ | 2.14 | Red Donahue | 113 | BAL |
| +033+ | 2.1 | Bill Bernhard | 107 | CLE |
| +035+ | 1.99 | Christy Mathewson | 143 | SFN |
| +038+ | 1.79 | Jesse Tannehill | 105.3 | NYA |
| +041+ | 1.64 | Happy Townsend | 81.3 | MIN |
| +045+ | 1.5 | Jack Taylor | 153 | CHN |
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