| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 5.23 | 190307250_OAK_MIN |
| Bill Donovan | DET | 4.58 | 190307261_DET_CHA |
| Doc White | CHA | 3.07 | 190307250_CHA_DET |
| Bill Bernhard | CLE | 1.67 | 190307240_BAL_CLE |
| Ed Siever | BAL | 1.66 | 190307260_CLE_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -3.41 | 190307240_SLN_PIT |
| Chick Fraser | PHI | -2.96 | 190307250_SFN_PHI |
| Wiley Piatt | ATL | -1.91 | 190307252_LAN_ATL |
| Ed Poole | CIN | -1.61 | 190307251_CIN_CHN |
| Gene Wright | CLE | -1.09 | 190307260_CLE_BAL |
Based on accumulated WAA for this season up to 1903-07-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.75 | Cy Young | 206.7 | BOS |
| +002+ | 9.19 | Bill Donovan | 182.7 | DET |
| +003+ | 8.91 | Rube Waddell | 244 | OAK |
| +004+ | 7.97 | Addie Joss | 190.7 | CLE |
| +005+ | 7.48 | Earl Moore | 159.7 | CLE |
| +006+ | 6.95 | George Mullin | 188 | DET |
| +007+ | 6.88 | Willie Sudhoff | 159.3 | BAL |
| +008+ | 6.77 | Bill Bernhard | 165.7 | CLE |
| +009+ | 6.51 | Doc White | 181.3 | CHA |
| +010+ | 6.35 | Bill Dinneen | 164.7 | BOS |
| +011+ | 6.11 | Eddie Plank | 180.7 | OAK |
| +014+ | 4.75 | Chief Bender | 170.3 | OAK |
| +018+ | 4.31 | Jack Chesbro | 200.3 | NYA |
| +017+ | 4.31 | Roy Patterson | 142 | CHA |
| +019+ | 4.19 | Ed Siever | 132.3 | BAL |
| +021+ | 3.76 | Christy Mathewson | 210.3 | SFN |
| +023+ | 3.64 | Red Donahue | 131 | BAL |
| +025+ | 3.52 | Tom Hughes | 119.7 | BOS |
| +030+ | 3.02 | Sam Leever | 160 | PIT |
| +032+ | 2.92 | Frank Kitson | 132.7 | DET |
| +034+ | 2.76 | Highball Wilson | 145.3 | MIN |
| +040+ | 2.39 | Clark Griffith | 133.7 | NYA |
| +045+ | 2.21 | Deacon Phillippe | 176.7 | PIT |
| +048+ | 2.11 | Watty Lee | 81.7 | MIN |
| +055+ | 1.65 | Jake Weimer | 175 | CHN |
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