| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 6.1 | 190409121_BOS_OAK |
| Jack Chesbro | NYA | 5.57 | 190409120_MIN_NYA |
| Cy Young | BOS | 2.56 | 190409100_BOS_OAK |
| Harry Howell | BAL | 1.18 | 190409112_DET_BAL |
| Bill Bernhard | CLE | 1.17 | 190409101_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -9.59 | 190409102_LAN_ATL |
| Bill Duggleby | PHI | -7.04 | 190409122_PHI_LAN |
| 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 1904-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.39 | Rube Waddell | 350.7 | OAK |
| +002+ | 12.83 | Jack Chesbro | 366.7 | NYA |
| +003+ | 10.16 | Eddie Plank | 317 | OAK |
| +004+ | 9.9 | Frank Owen | 306 | CHA |
| +005+ | 9.88 | Joe McGinnity | 358.3 | SFN |
| +006+ | 8.68 | Cy Young | 312 | BOS |
| +008+ | 7.96 | Jesse Tannehill | 256.7 | BOS |
| +009+ | 6.2 | Harry Howell | 255.7 | BAL |
| +010+ | 6.06 | Bill Bernhard | 270 | CLE |
| +011+ | 5.89 | Red Donahue | 233 | CLE |
| +012+ | 5.86 | Bill Dinneen | 256.7 | BOS |
| +015+ | 5.68 | Ed Killian | 301.7 | DET |
| +016+ | 5.66 | Fred Glade | 248.7 | BAL |
| +017+ | 5.49 | Addie Joss | 150.3 | CLE |
| +018+ | 5.44 | George Mullin | 324 | DET |
| +021+ | 5.26 | Doc White | 169 | CHA |
| +020+ | 5.26 | Jack Powell | 317.7 | NYA |
| +022+ | 5.21 | Earl Moore | 216.3 | CLE |
| +024+ | 4.88 | Jake Weimer | 263.7 | CHN |
| +025+ | 4.88 | Norwood Gibson | 217 | BOS |
| +029+ | 4.42 | Frank Smith | 174.3 | CHA |
| +032+ | 4.24 | Kid Nichols | 283 | SLN |
| +033+ | 4.18 | Bill Donovan | 270 | DET |
| +035+ | 3.99 | Weldon Henley | 239.7 | OAK |
| +041+ | 3.71 | Patsy Flaherty | 255 | TOT |
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