| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -7.04 | 190409122_PHI_LAN |
| Vic Willis | ATL | -3.84 | 190409120_SFN_ATL |
| Oscar Jones | LAN | -2.39 | 190409122_PHI_LAN |
| Happy Townsend | MIN | -0.57 | 190409120_MIN_NYA |
| Bob Ewing | CIN | -0.52 | 190409112_SLN_CIN |
Based on accumulated WAA for this season up to 1904-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.18 | Rube Waddell | 350.7 | OAK |
| +002+ | 12.79 | Jack Chesbro | 366.7 | NYA |
| +003+ | 10.38 | Joe McGinnity | 367.3 | SFN |
| +004+ | 9.98 | Eddie Plank | 317 | OAK |
| +005+ | 9.87 | Frank Owen | 306 | CHA |
| +006+ | 8.51 | Cy Young | 312 | BOS |
| +007+ | 8.35 | Jesse Tannehill | 263.7 | BOS |
| +009+ | 6.17 | Harry Howell | 255.7 | BAL |
| +011+ | 6.03 | Bill Bernhard | 270 | CLE |
| +013+ | 5.86 | Red Donahue | 233 | CLE |
| +014+ | 5.71 | Bill Dinneen | 256.7 | BOS |
| +015+ | 5.65 | Ed Killian | 301.7 | DET |
| +016+ | 5.64 | Fred Glade | 248.7 | BAL |
| +017+ | 5.48 | Addie Joss | 150.3 | CLE |
| +018+ | 5.41 | George Mullin | 324 | DET |
| +020+ | 5.24 | Doc White | 169 | CHA |
| +021+ | 5.23 | Jack Powell | 317.7 | NYA |
| +022+ | 5.19 | Earl Moore | 216.3 | CLE |
| +025+ | 4.86 | Jake Weimer | 263.7 | CHN |
| +026+ | 4.75 | Norwood Gibson | 217 | BOS |
| +030+ | 4.4 | Frank Smith | 174.3 | CHA |
| +031+ | 4.39 | Weldon Henley | 246.7 | OAK |
| +034+ | 4.21 | Kid Nichols | 283 | SLN |
| +036+ | 4.16 | Bill Donovan | 270 | DET |
| +041+ | 3.75 | Patsy Flaherty | 255 | TOT |
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