| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 4.58 | 190308110_OAK_BOS |
| Cy Young | BOS | 4.51 | 190308100_OAK_BOS |
| Earl Moore | CLE | 2.89 | 190308100_CHA_CLE |
| Christy Mathewson | SFN | 1.09 | 190308100_SFN_LAN |
| Roy Patterson | CHA | 0.96 | 190308100_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Togie Pittinger | ATL | -3.49 | 190308121_CHN_ATL |
| Henry Schmidt | LAN | -2.76 | 190308100_SFN_LAN |
| Dummy Taylor | SFN | -0.78 | 190308120_SLN_SFN |
| Cy Falkenberg | PIT | -0.67 | 190308100_SLN_PIT |
| Al Orth | MIN | -0.23 | 190308110_MIN_NYA |
Based on accumulated WAA for this season up to 1903-08-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.81 | Cy Young | 239.7 | BOS |
| +002+ | 9.78 | Earl Moore | 194.7 | CLE |
| +003+ | 9.59 | Doc White | 217.3 | CHA |
| +004+ | 9.48 | Bill Donovan | 209 | DET |
| +005+ | 9.43 | Rube Waddell | 284 | OAK |
| +006+ | 9.17 | Willie Sudhoff | 195.3 | BAL |
| +007+ | 8.71 | Addie Joss | 238.7 | CLE |
| +008+ | 7.79 | George Mullin | 218 | DET |
| +009+ | 7.53 | Bill Dinneen | 202.7 | BOS |
| +010+ | 7.38 | Eddie Plank | 219.3 | OAK |
| +012+ | 6.03 | Tom Hughes | 155.7 | BOS |
| +015+ | 5.46 | Chief Bender | 186.3 | OAK |
| +018+ | 5.09 | Frank Kitson | 165.7 | DET |
| +019+ | 4.91 | Ed Siever | 165 | BAL |
| +020+ | 4.81 | Red Donahue | 160 | TOT |
| +021+ | 4.78 | Jack Chesbro | 232.3 | NYA |
| +022+ | 4.64 | Christy Mathewson | 256.3 | SFN |
| +025+ | 3.97 | Clark Griffith | 159.7 | NYA |
| +026+ | 3.8 | Roy Patterson | 178 | CHA |
| +033+ | 3.22 | Joe McGinnity | 299.7 | SFN |
| +045+ | 2.64 | Casey Patten | 228 | MIN |
| +046+ | 2.63 | Highball Wilson | 179.3 | MIN |
| +050+ | 2.19 | Jesse Tannehill | 163.3 | NYA |
| +055+ | 1.95 | Watty Lee | 81.7 | MIN |
| +056+ | 1.9 | Sam Leever | 193 | PIT |
_