| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 6.23 | 190409291_OAK_BAL |
| Jack Chesbro | NYA | 6.18 | 190409270_NYA_DET |
| Cy Young | BOS | 2.82 | 190409290_BOS_CLE |
| Bill Bernhard | CLE | 1.9 | 190409290_BOS_CLE |
| Harry Howell | BAL | 1.69 | 190409281_OAK_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -5.59 | 190409291_CIN_PHI |
| Kaiser Wilhelm | ATL | -2.95 | 190409270_PIT_ATL |
| Chappie McFarland | SLN | -2.72 | 190409270_SLN_LAN |
| Oscar Jones | LAN | -1.79 | 190409290_SLN_LAN |
| Jack Harper | CIN | -0.38 | 190409291_CIN_PHI |
Based on accumulated WAA for this season up to 1904-09-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.6 | Jack Chesbro | 411.7 | NYA |
| +002+ | 13.37 | Rube Waddell | 361.7 | OAK |
| +003+ | 10.1 | Joe McGinnity | 392.3 | SFN |
| +006+ | 9.06 | Cy Young | 355 | BOS |
| +008+ | 7.58 | Jesse Tannehill | 281.7 | BOS |
| +009+ | 7.47 | Bill Bernhard | 308.7 | CLE |
| +010+ | 6.96 | Doc White | 196 | CHA |
| +011+ | 6.91 | Harry Howell | 282.7 | BAL |
| +012+ | 6.47 | Bill Dinneen | 300.7 | BOS |
| +014+ | 6.06 | Jack Powell | 366.7 | NYA |
| +015+ | 5.97 | Addie Joss | 174.3 | CLE |
| +018+ | 5.51 | George Mullin | 351.3 | DET |
| +020+ | 5.43 | Fred Glade | 279.7 | BAL |
| +022+ | 5.21 | Frank Smith | 192.3 | CHA |
| +024+ | 5.06 | Norwood Gibson | 248 | BOS |
| +027+ | 4.78 | Red Donahue | 259 | CLE |
| +030+ | 4.49 | Otto Hess | 132.3 | CLE |
| +033+ | 4.43 | Kid Nichols | 300 | SLN |
| +034+ | 4.26 | Bill Donovan | 293 | DET |
| +037+ | 4.17 | Jake Weimer | 288.7 | CHN |
| +040+ | 3.98 | Weldon Henley | 286.7 | OAK |
| +041+ | 3.95 | Patsy Flaherty | 268 | TOT |
| +048+ | 3.31 | Roy Patterson | 142.7 | CHA |
| +059+ | 2.22 | Ed Siever | 196 | BAL |
| +063+ | 2.05 | George Winter | 126 | BOS |
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