| Starter | Tm | Tier | Game |
|---|---|---|---|
| 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 |
| George Mullin | DET | 2.19 | 190308011_BAL_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.31 | 190308011_LAN_PHI |
| Togie Pittinger | ATL | -3.56 | 190308011_SFN_ATL |
| Roy Evans | BAL | -1.96 | 190308012_BAL_DET |
| Ned Garvin | LAN | -1.49 | 190308011_LAN_PHI |
| Jack Harper | CIN | -1.34 | 190308020_CHN_CIN |
Based on accumulated WAA for this season up to 1903-08-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.9 | Bill Donovan | 191.7 | DET |
| +002+ | 9.46 | Cy Young | 223.7 | BOS |
| +003+ | 9.18 | Rube Waddell | 267 | OAK |
| +004+ | 8.5 | Earl Moore | 176.7 | CLE |
| +005+ | 8.42 | Willie Sudhoff | 186.3 | BAL |
| +006+ | 8.16 | Doc White | 199.3 | CHA |
| +007+ | 8.07 | George Mullin | 206 | DET |
| +008+ | 7.9 | Addie Joss | 211.7 | CLE |
| +009+ | 7.2 | Bill Dinneen | 184.7 | BOS |
| +010+ | 6.97 | Eddie Plank | 198.3 | OAK |
| +011+ | 6.87 | Bill Bernhard | 165.7 | CLE |
| +015+ | 5.06 | Tom Hughes | 137.7 | BOS |
| +016+ | 4.96 | Chief Bender | 178.3 | OAK |
| +019+ | 4.21 | Roy Patterson | 157 | CHA |
| +020+ | 4.17 | Ed Siever | 140.3 | BAL |
| +022+ | 3.81 | Frank Kitson | 150.7 | DET |
| +024+ | 3.65 | Christy Mathewson | 227.3 | SFN |
| +025+ | 3.64 | Jack Chesbro | 214.3 | NYA |
| +029+ | 3.4 | Clark Griffith | 150.7 | NYA |
| +030+ | 3.36 | Highball Wilson | 164.3 | MIN |
| +031+ | 3.29 | Sam Leever | 178 | PIT |
| +046+ | 2.41 | Casey Patten | 211.7 | MIN |
| +048+ | 2.31 | Joe McGinnity | 273.7 | SFN |
| +054+ | 1.95 | Watty Lee | 81.7 | MIN |
| +059+ | 1.6 | Jesse Tannehill | 156.3 | NYA |
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