| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.6 | 190306190_OAK_CHA |
| Sam Leever | PIT | 3.23 | 190306190_PIT_ATL |
| Christy Mathewson | SFN | 3.02 | 190306180_CHN_SFN |
| Bill Dinneen | BOS | 2.91 | 190306190_BOS_CLE |
| Addie Joss | CLE | 1.23 | 190306172_CLE_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack McFetridge | PHI | -1.38 | 190306180_CIN_PHI |
| Wiley Piatt | ATL | -1.17 | 190306172_LAN_ATL |
| Gene Wright | CLE | -0.9 | 190306190_BOS_CLE |
| Ned Garvin | LAN | -0.65 | 190306171_LAN_ATL |
| Norwood Gibson | BOS | -0.61 | 190306171_CLE_BOS |
Based on accumulated WAA for this season up to 1903-06-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.12 | Rube Waddell | 161.3 | OAK |
| +002+ | 5.68 | Addie Joss | 117.3 | CLE |
| +003+ | 5.32 | Cy Young | 129.7 | BOS |
| +004+ | 5.2 | Eddie Plank | 108 | OAK |
| +005+ | 4.9 | George Mullin | 119 | DET |
| +006+ | 4.63 | Sam Leever | 108 | PIT |
| +007+ | 4.53 | Jack Chesbro | 122.7 | NYA |
| +008+ | 4.39 | Bill Donovan | 95.7 | DET |
| +009+ | 4.35 | Earl Moore | 89 | CLE |
| +010+ | 4.01 | Doc White | 97 | CHA |
| +011+ | 3.99 | Bill Dinneen | 117.7 | BOS |
| +012+ | 3.65 | Joe McGinnity | 155.7 | SFN |
| +013+ | 3.42 | Christy Mathewson | 134 | SFN |
| +014+ | 3.33 | Willie Sudhoff | 86 | BAL |
| +016+ | 3.11 | Chief Bender | 110.3 | OAK |
| +018+ | 2.98 | Roy Patterson | 90.3 | CHA |
| +020+ | 2.86 | Jack Sutthoff | 102 | CIN |
| +023+ | 2.52 | Tom Hughes | 74.7 | BOS |
| +027+ | 2.3 | Ed Siever | 68 | BAL |
| +028+ | 2.27 | Red Donahue | 95 | BAL |
| +033+ | 1.92 | Jack Taylor | 142.3 | CHN |
| +035+ | 1.81 | Bill Bernhard | 98 | CLE |
| +037+ | 1.73 | John Deering | 40.7 | DET |
| +038+ | 1.71 | Barney Wolfe | 43 | NYA |
| +041+ | 1.64 | Jack Powell | 95 | BAL |
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