| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 6.64 | 190409061_OAK_NYA |
| Jack Chesbro | NYA | 5.67 | 190409081_NYA_OAK |
| Joe McGinnity | SFN | 4.16 | 190409060_ATL_SFN |
| Frank Owen | CHA | 3.42 | 190409082_CHA_CLE |
| Cy Young | BOS | 2.46 | 190409071_BOS_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -8.94 | 190409060_ATL_SFN |
| Bill Duggleby | PHI | -6.56 | 190409081_PHI_SFN |
| Chappie McFarland | SLN | -2.22 | 190409060_CHN_SLN |
| Oscar Jones | LAN | -1.37 | 190409082_LAN_ATL |
| Jesse Stovall | DET | -1.28 | 190409082_BAL_DET |
Based on accumulated WAA for this season up to 1904-09-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.95 | Rube Waddell | 338.7 | OAK |
| +002+ | 12.57 | Jack Chesbro | 357.7 | NYA |
| +003+ | 10.16 | Joe McGinnity | 349.3 | SFN |
| +004+ | 9.9 | Frank Owen | 306 | CHA |
| +005+ | 9.22 | Eddie Plank | 304 | OAK |
| +006+ | 7.99 | Jesse Tannehill | 256.7 | BOS |
| +007+ | 7.95 | Cy Young | 299.3 | BOS |
| +009+ | 6.22 | Bill Bernhard | 261 | CLE |
| +010+ | 5.85 | Bill Dinneen | 242.7 | BOS |
| +011+ | 5.7 | Harry Howell | 241.7 | BAL |
| +012+ | 5.68 | Frank Smith | 166.3 | CHA |
| +016+ | 5.2 | Red Donahue | 224 | CLE |
| +018+ | 5.09 | Addie Joss | 142.3 | CLE |
| +019+ | 5.08 | Jack Powell | 309.7 | NYA |
| +020+ | 4.97 | Kid Nichols | 265 | SLN |
| +021+ | 4.95 | Ed Killian | 292.7 | DET |
| +024+ | 4.91 | George Mullin | 315 | DET |
| +025+ | 4.83 | Norwood Gibson | 208 | BOS |
| +027+ | 4.65 | Fred Glade | 230.7 | BAL |
| +028+ | 4.56 | Jake Weimer | 246.7 | CHN |
| +029+ | 4.48 | Doc White | 151 | CHA |
| +034+ | 3.8 | Bill Donovan | 251.3 | DET |
| +036+ | 3.79 | Otto Hess | 96.3 | CLE |
| +042+ | 3.43 | Patsy Flaherty | 246 | TOT |
| +043+ | 3.34 | Weldon Henley | 230.7 | OAK |
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