| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Donovan | DET | 5.36 | 190308030_DET_CLE |
| Rube Waddell | OAK | 5.07 | 190308010_OAK_NYA |
| Cy Young | BOS | 4.87 | 190308011_BOS_MIN |
| Doc White | CHA | 3.18 | 190308020_CLE_CHA |
| Earl Moore | CLE | 2.51 | 190308010_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.31 | 190308011_LAN_PHI |
| Togie Pittinger | ATL | -3.56 | 190308011_SFN_ATL |
| Henry Schmidt | LAN | -3.13 | 190308030_LAN_PHI |
| Roy Evans | BAL | -1.96 | 190308012_BAL_DET |
| Jack Harper | CIN | -1.34 | 190308020_CHN_CIN |
Based on accumulated WAA for this season up to 1903-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.81 | Bill Donovan | 200 | DET |
| +002+ | 9.45 | Cy Young | 223.7 | BOS |
| +003+ | 9.14 | Rube Waddell | 267 | OAK |
| +004+ | 8.47 | Earl Moore | 176.7 | CLE |
| +005+ | 8.39 | Willie Sudhoff | 186.3 | BAL |
| +006+ | 8.16 | Doc White | 199.3 | CHA |
| +007+ | 8.05 | George Mullin | 206 | DET |
| +008+ | 7.85 | Addie Joss | 220.7 | CLE |
| +009+ | 7.54 | Eddie Plank | 207.3 | OAK |
| +010+ | 7.19 | Bill Dinneen | 184.7 | BOS |
| +011+ | 6.85 | Bill Bernhard | 165.7 | CLE |
| +015+ | 5.06 | Tom Hughes | 137.7 | BOS |
| +016+ | 4.93 | Chief Bender | 178.3 | OAK |
| +018+ | 4.33 | Christy Mathewson | 238.3 | SFN |
| +019+ | 4.31 | Ed Siever | 149 | BAL |
| +022+ | 4.21 | Roy Patterson | 157 | CHA |
| +023+ | 3.8 | Frank Kitson | 150.7 | DET |
| +025+ | 3.61 | Jack Chesbro | 214.3 | NYA |
| +029+ | 3.38 | Clark Griffith | 150.7 | NYA |
| +030+ | 3.34 | Highball Wilson | 164.3 | MIN |
| +031+ | 3.22 | Sam Leever | 179.7 | PIT |
| +046+ | 2.38 | Casey Patten | 211.7 | MIN |
| +049+ | 2.21 | Joe McGinnity | 273.7 | SFN |
| +055+ | 1.94 | Watty Lee | 81.7 | MIN |
| +059+ | 1.58 | Jesse Tannehill | 156.3 | NYA |
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