| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 6.87 | 190409052_OAK_NYA |
| Jack Chesbro | NYA | 5.76 | 190409051_OAK_NYA |
| Joe McGinnity | SFN | 4.16 | 190409060_ATL_SFN |
| Cy Young | BOS | 2.46 | 190409071_BOS_MIN |
| Bill Bernhard | CLE | 1.39 | 190409070_BAL_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -8.94 | 190409060_ATL_SFN |
| Chick Fraser | PHI | -3.2 | 190409052_LAN_PHI |
| Chappie McFarland | SLN | -2.22 | 190409060_CHN_SLN |
| Oscar Jones | LAN | -1.76 | 190409052_LAN_PHI |
| Deacon Phillippe | PIT | -0.83 | 190409062_CIN_PIT |
Based on accumulated WAA for this season up to 1904-09-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.74 | Rube Waddell | 329.7 | OAK |
| +002+ | 12.16 | Jack Chesbro | 348.7 | NYA |
| +003+ | 10.18 | Joe McGinnity | 349.3 | SFN |
| +004+ | 9.66 | Frank Owen | 297 | CHA |
| +005+ | 9.28 | Eddie Plank | 304 | OAK |
| +006+ | 8.01 | Cy Young | 299.3 | BOS |
| +008+ | 7.34 | Jesse Tannehill | 247.7 | BOS |
| +009+ | 6.28 | Bill Bernhard | 261 | CLE |
| +010+ | 5.92 | Frank Smith | 158.3 | CHA |
| +011+ | 5.9 | Bill Dinneen | 242.7 | BOS |
| +012+ | 5.73 | Harry Howell | 241.7 | BAL |
| +016+ | 5.25 | Red Donahue | 224 | CLE |
| +018+ | 5.14 | Jack Powell | 309.7 | NYA |
| +019+ | 5.03 | Kid Nichols | 265 | SLN |
| +020+ | 4.99 | Ed Killian | 292.7 | DET |
| +024+ | 4.68 | Fred Glade | 230.7 | BAL |
| +026+ | 4.62 | Jake Weimer | 246.7 | CHN |
| +027+ | 4.5 | Doc White | 151 | CHA |
| +028+ | 4.41 | Addie Joss | 133.3 | CLE |
| +029+ | 4.29 | George Mullin | 306 | DET |
| +030+ | 4.17 | Norwood Gibson | 199 | BOS |
| +034+ | 3.83 | Bill Donovan | 251.3 | DET |
| +035+ | 3.68 | Patsy Flaherty | 238 | TOT |
| +039+ | 3.38 | Weldon Henley | 230.7 | OAK |
| +044+ | 3.1 | Otto Hess | 87.3 | CLE |
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