| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.49 | 190408020_OAK_BAL |
| Joe McGinnity | SFN | 4.88 | 190408041_CHN_SFN |
| Jack Chesbro | NYA | 3.63 | 190408030_NYA_DET |
| Frank Owen | CHA | 2.26 | 190408020_MIN_CHA |
| Bill Dinneen | BOS | 1.31 | 190408030_BOS_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -6.01 | 190408032_SLN_ATL |
| Tully Sparks | PHI | -2.85 | 190408031_CIN_PHI |
| Jack Harper | CIN | -0.73 | 190408032_CIN_PHI |
| Roscoe Miller | PIT | -0.7 | 190408030_PIT_LAN |
| Beany Jacobson | MIN | -0.26 | 190408020_MIN_CHA |
Based on accumulated WAA for this season up to 1904-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.48 | Rube Waddell | 243.3 | OAK |
| +002+ | 9.15 | Jack Chesbro | 263 | NYA |
| +003+ | 8.74 | Joe McGinnity | 266.3 | SFN |
| +004+ | 7.68 | Cy Young | 222.3 | BOS |
| +005+ | 7.62 | Frank Owen | 224 | CHA |
| +006+ | 7.04 | Eddie Plank | 225 | OAK |
| +008+ | 5.65 | Patsy Flaherty | 177 | TOT |
| +010+ | 5.22 | Ed Killian | 222.3 | DET |
| +011+ | 5 | Jesse Tannehill | 175.7 | BOS |
| +012+ | 4.64 | Frank Smith | 106.7 | CHA |
| +013+ | 4.39 | Earl Moore | 178.3 | CLE |
| +014+ | 4.34 | Harry Howell | 171 | BAL |
| +016+ | 4.22 | Red Donahue | 161 | CLE |
| +017+ | 4.13 | Bill Dinneen | 172.7 | BOS |
| +021+ | 3.93 | Fred Glade | 155 | BAL |
| +022+ | 3.83 | Bill Bernhard | 192 | CLE |
| +027+ | 3.36 | George Mullin | 234 | DET |
| +028+ | 3.22 | Norwood Gibson | 156 | BOS |
| +032+ | 3.13 | Jack Taylor | 218.3 | SLN |
| +033+ | 2.99 | Jack Powell | 217.7 | NYA |
| +034+ | 2.99 | Kid Nichols | 176 | SLN |
| +040+ | 2.57 | Weldon Henley | 167.7 | OAK |
| +042+ | 2.53 | Nick Altrock | 187 | CHA |
| +043+ | 2.48 | Ed Siever | 155.3 | BAL |
| +044+ | 2.42 | Jake Weimer | 175.7 | CHN |
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