| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.74 | 190307231_BOS_NYA |
| Rube Waddell | OAK | 5.23 | 190307250_OAK_MIN |
| Bill Donovan | DET | 4.14 | 190307230_CHA_DET |
| Doc White | CHA | 3.07 | 190307250_CHA_DET |
| Addie Joss | CLE | 1.96 | 190307230_BAL_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -3.66 | 190307230_SFN_PHI |
| Mike O'Neill | SLN | -3.41 | 190307240_SLN_PIT |
| Wiley Piatt | ATL | -1.91 | 190307252_LAN_ATL |
| Ed Poole | CIN | -1.61 | 190307251_CIN_CHN |
| Ned Garvin | LAN | -0.74 | 190307251_LAN_ATL |
Based on accumulated WAA for this season up to 1903-07-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.77 | Cy Young | 206.7 | BOS |
| +002+ | 8.95 | Rube Waddell | 244 | OAK |
| +003+ | 8.37 | Bill Donovan | 173.7 | DET |
| +004+ | 7.98 | Addie Joss | 190.7 | CLE |
| +005+ | 7.49 | Earl Moore | 159.7 | CLE |
| +006+ | 6.96 | George Mullin | 188 | DET |
| +007+ | 6.91 | Willie Sudhoff | 159.3 | BAL |
| +008+ | 6.77 | Bill Bernhard | 165.7 | CLE |
| +009+ | 6.53 | Doc White | 181.3 | CHA |
| +010+ | 6.37 | Bill Dinneen | 164.7 | BOS |
| +011+ | 6.13 | Eddie Plank | 180.7 | OAK |
| +014+ | 4.77 | Chief Bender | 170.3 | OAK |
| +017+ | 4.34 | Jack Chesbro | 200.3 | NYA |
| +018+ | 4.32 | Roy Patterson | 142 | CHA |
| +020+ | 4.01 | Ed Siever | 123.3 | BAL |
| +021+ | 3.79 | Christy Mathewson | 210.3 | SFN |
| +023+ | 3.67 | Red Donahue | 131 | BAL |
| +024+ | 3.54 | Tom Hughes | 119.7 | BOS |
| +027+ | 3.04 | Sam Leever | 160 | PIT |
| +030+ | 2.93 | Frank Kitson | 132.7 | DET |
| +034+ | 2.78 | Highball Wilson | 145.3 | MIN |
| +040+ | 2.41 | Clark Griffith | 133.7 | NYA |
| +042+ | 2.23 | Deacon Phillippe | 176.7 | PIT |
| +046+ | 2.12 | Watty Lee | 81.7 | MIN |
| +055+ | 1.67 | Jake Weimer | 175 | CHN |
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