| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8 | 190408290_CHA_OAK |
| Joe McGinnity | SFN | 5.45 | 190408281_SFN_SLN |
| Cy Young | BOS | 3.16 | 190408300_DET_BOS |
| Ed Killian | DET | 1.38 | 190408290_DET_BOS |
| Bill Bernhard | CLE | 1.16 | 190408290_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Willis | ATL | -3.84 | 190408300_ATL_PIT |
| Tully Sparks | PHI | -3.06 | 190408290_PHI_CHN |
| Oscar Jones | LAN | -2.02 | 190408300_LAN_CHN |
| Chappie McFarland | SLN | -0.99 | 190408282_SFN_SLN |
| Happy Townsend | MIN | -0.6 | 190408301_BAL_MIN |
Based on accumulated WAA for this season up to 1904-08-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.19 | Rube Waddell | 312.3 | OAK |
| +002+ | 10.67 | Joe McGinnity | 328.3 | SFN |
| +003+ | 10.61 | Jack Chesbro | 321.7 | NYA |
| +004+ | 9.46 | Frank Owen | 285 | CHA |
| +005+ | 8.45 | Cy Young | 281.3 | BOS |
| +006+ | 7.71 | Eddie Plank | 277 | OAK |
| +008+ | 6.7 | Jesse Tannehill | 229.7 | BOS |
| +009+ | 6.11 | Ed Killian | 276.7 | DET |
| +010+ | 5.88 | Bill Dinneen | 224.7 | BOS |
| +013+ | 5.69 | Bill Bernhard | 244 | CLE |
| +012+ | 5.69 | Red Donahue | 207 | CLE |
| +016+ | 5.34 | George Mullin | 289 | DET |
| +015+ | 5.34 | Harry Howell | 224.7 | BAL |
| +017+ | 5.06 | Frank Smith | 141.3 | CHA |
| +021+ | 4.79 | Kid Nichols | 239 | SLN |
| +022+ | 4.78 | Jack Powell | 284.7 | NYA |
| +025+ | 4.45 | Patsy Flaherty | 229 | TOT |
| +027+ | 4.05 | Jake Weimer | 229.7 | CHN |
| +028+ | 4.04 | Bill Donovan | 234.3 | DET |
| +029+ | 3.97 | Addie Joss | 124.3 | CLE |
| +032+ | 3.85 | Doc White | 142 | CHA |
| +033+ | 3.79 | Fred Glade | 212.7 | BAL |
| +035+ | 3.72 | Norwood Gibson | 181 | BOS |
| +039+ | 3.41 | Weldon Henley | 213.7 | OAK |
| +045+ | 2.92 | Nick Altrock | 234 | CHA |
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