| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Donovan | DET | 5.09 | 190308060_DET_CLE |
| Cy Young | BOS | 5.09 | 190308060_BOS_OAK |
| Rube Waddell | OAK | 4.86 | 190308050_BOS_OAK |
| Doc White | CHA | 3.69 | 190308060_BAL_CHA |
| Earl Moore | CLE | 2.67 | 190308050_DET_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Evans | BAL | -2.36 | 190308042_CHA_BAL |
| Mordecai Brown | SLN | -1.19 | 190308060_CIN_SLN |
| Jock Menefee | CHN | -0.38 | 190308040_PIT_CHN |
| Nick Altrock | CHA | -0.04 | 190308042_CHA_BAL |
| Rube Kisinger | DET | 0 | 190308050_DET_CLE |
Based on accumulated WAA for this season up to 1903-08-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.59 | Rube Waddell | 276 | OAK |
| +002+ | 9.46 | Bill Donovan | 209 | DET |
| +003+ | 9.35 | Cy Young | 230.7 | BOS |
| +004+ | 9.16 | Earl Moore | 185.7 | CLE |
| +005+ | 8.64 | Doc White | 208.3 | CHA |
| +006+ | 8.27 | Willie Sudhoff | 186.3 | BAL |
| +007+ | 7.92 | Bill Dinneen | 193.7 | BOS |
| +008+ | 7.78 | George Mullin | 209 | DET |
| +009+ | 7.7 | Addie Joss | 220.7 | CLE |
| +010+ | 7.43 | Eddie Plank | 207.3 | OAK |
| +014+ | 5.34 | Chief Bender | 186.3 | OAK |
| +016+ | 5 | Tom Hughes | 137.7 | BOS |
| +017+ | 4.53 | Ed Siever | 157 | BAL |
| +019+ | 4.25 | Frank Kitson | 156.7 | DET |
| +021+ | 4.21 | Roy Patterson | 165 | CHA |
| +023+ | 4.18 | Christy Mathewson | 238.3 | SFN |
| +024+ | 4.11 | Jack Chesbro | 223.3 | NYA |
| +025+ | 3.8 | Red Donahue | 140 | TOT |
| +030+ | 3.32 | Clark Griffith | 150.7 | NYA |
| +034+ | 3.06 | Highball Wilson | 171.3 | MIN |
| +038+ | 2.88 | Casey Patten | 220.7 | MIN |
| +049+ | 2.14 | Jesse Tannehill | 163.3 | NYA |
| +051+ | 2.04 | Joe McGinnity | 273.7 | SFN |
| +054+ | 1.97 | Sam Leever | 180.7 | PIT |
| +055+ | 1.9 | Watty Lee | 81.7 | MIN |
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