| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.06 | 190307042_DET_OAK |
| Bill Donovan | DET | 4.4 | 190307042_DET_OAK |
| Doc White | CHA | 4.17 | 190307041_CHA_NYA |
| Bill Dinneen | BOS | 3.34 | 190307042_BAL_BOS |
| Ed Siever | BAL | 1.85 | 190307041_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wiley Piatt | ATL | -3.53 | 190307041_ATL_SLN |
| Chick Fraser | PHI | -2.1 | 190307041_PHI_PIT |
| Ed Poole | CIN | -1.79 | 190307041_LAN_CIN |
| Henry Schmidt | LAN | -1.39 | 190307041_LAN_CIN |
| Gene Wright | CLE | -0.75 | 190307040_CLE_MIN |
Based on accumulated WAA for this season up to 1903-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.62 | Cy Young | 157.7 | BOS |
| +002+ | 7.51 | Rube Waddell | 195 | OAK |
| +003+ | 6.78 | Bill Donovan | 128.7 | DET |
| +004+ | 6.72 | George Mullin | 144 | DET |
| +005+ | 5.78 | Doc White | 142.3 | CHA |
| +006+ | 5.72 | Addie Joss | 146.3 | CLE |
| +007+ | 5.72 | Bill Dinneen | 143.7 | BOS |
| +008+ | 5.35 | Earl Moore | 121 | CLE |
| +009+ | 5.16 | Jack Chesbro | 158.3 | NYA |
| +010+ | 4.86 | Eddie Plank | 144.7 | OAK |
| +012+ | 4.27 | Willie Sudhoff | 121 | BAL |
| +015+ | 3.79 | Sam Leever | 131 | PIT |
| +016+ | 3.79 | Tom Hughes | 101.7 | BOS |
| +017+ | 3.74 | Roy Patterson | 109 | CHA |
| +018+ | 3.61 | Bill Bernhard | 125 | CLE |
| +020+ | 3.49 | Red Donahue | 131 | BAL |
| +021+ | 3.18 | Chief Bender | 135.3 | OAK |
| +025+ | 2.59 | Ed Siever | 84 | BAL |
| +026+ | 2.55 | Barney Wolfe | 69.3 | NYA |
| +031+ | 2.46 | Joe McGinnity | 195.3 | SFN |
| +032+ | 2.28 | Jesse Tannehill | 123.3 | NYA |
| +034+ | 2.21 | Christy Mathewson | 161 | SFN |
| +037+ | 2 | Frank Kitson | 106.3 | DET |
| +043+ | 1.87 | Noodles Hahn | 115.7 | CIN |
| +047+ | 1.69 | John Deering | 52.7 | DET |
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