| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.86 | 190408110_OAK_CLE |
| Cy Young | BOS | 3.61 | 190408090_BOS_DET |
| Jack Chesbro | NYA | 3.43 | 190408100_NYA_CHA |
| George Mullin | DET | 0.89 | 190408100_MIN_DET |
| Earl Moore | CLE | 0.81 | 190408090_NYA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Willis | ATL | -2.83 | 190408110_PIT_ATL |
| Chick Fraser | PHI | -2.41 | 190408110_CHN_PHI |
| Oscar Jones | LAN | -2.09 | 190408110_SLN_LAN |
| Happy Townsend | MIN | -1.62 | 190408100_MIN_DET |
| Bob Ewing | CIN | -0.8 | 190408110_CIN_SFN |
Based on accumulated WAA for this season up to 1904-08-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.5 | Rube Waddell | 265.3 | OAK |
| +002+ | 9.16 | Jack Chesbro | 278 | NYA |
| +003+ | 8.71 | Joe McGinnity | 274.3 | SFN |
| +004+ | 8.61 | Frank Owen | 242 | CHA |
| +005+ | 7.54 | Cy Young | 238.3 | BOS |
| +006+ | 7.33 | Eddie Plank | 243 | OAK |
| +008+ | 5.93 | Ed Killian | 231.3 | DET |
| +010+ | 5.35 | Patsy Flaherty | 194 | TOT |
| +011+ | 4.92 | Frank Smith | 115.7 | CHA |
| +012+ | 4.81 | Jesse Tannehill | 193.7 | BOS |
| +013+ | 4.78 | Earl Moore | 192.3 | CLE |
| +015+ | 4.63 | Red Donahue | 170 | CLE |
| +016+ | 4.46 | Bill Bernhard | 209 | CLE |
| +017+ | 4.41 | Harry Howell | 180 | BAL |
| +018+ | 4.39 | Bill Dinneen | 180.7 | BOS |
| +019+ | 4.34 | George Mullin | 252 | DET |
| +024+ | 3.89 | Jack Powell | 238.7 | NYA |
| +026+ | 3.73 | Nick Altrock | 205 | CHA |
| +027+ | 3.65 | Fred Glade | 173 | BAL |
| +029+ | 3.62 | Kid Nichols | 193 | SLN |
| +036+ | 3.04 | Doc White | 121 | CHA |
| +041+ | 2.57 | Jack Taylor | 226.3 | SLN |
| +042+ | 2.57 | Bill Donovan | 198 | DET |
| +043+ | 2.56 | Norwood Gibson | 163 | BOS |
| +045+ | 2.48 | Addie Joss | 94.7 | CLE |
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