| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eddie Plank | OAK | 2.6 | 190406280_OAK_MIN |
| Jack Taylor | SLN | 2.5 | 190406260_SLN_CIN |
| Sam Leever | PIT | 1.6 | 190406270_PIT_CHN |
| Doc White | CHA | 1.56 | 190406261_DET_CHA |
| George Mullin | DET | 1.32 | 190406280_CHA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -4.27 | 190406260_ATL_LAN |
| Bill Duggleby | PHI | -2.69 | 190406280_PHI_SFN |
| Oscar Jones | LAN | -1.23 | 190406280_ATL_LAN |
| Roscoe Miller | PIT | -0.87 | 190406260_PIT_CHN |
| Jesse Stovall | DET | -0.75 | 190406261_DET_CHA |
Based on accumulated WAA for this season up to 1904-06-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.51 | Joe McGinnity | 187 | SFN |
| +002+ | 7.39 | Rube Waddell | 161 | OAK |
| +003+ | 6.44 | Jack Chesbro | 173 | NYA |
| +004+ | 5.68 | Red Donahue | 116.3 | CLE |
| +005+ | 5.54 | Frank Owen | 153.7 | CHA |
| +006+ | 4.92 | Cy Young | 136 | BOS |
| +007+ | 4.26 | Jesse Tannehill | 122.7 | BOS |
| +009+ | 4 | Eddie Plank | 153 | OAK |
| +011+ | 3.53 | Harry Howell | 115.7 | BAL |
| +017+ | 3.05 | George Mullin | 175 | DET |
| +018+ | 3.02 | Bill Dinneen | 130.7 | BOS |
| +019+ | 2.91 | Ed Killian | 156 | DET |
| +020+ | 2.88 | Bill Bernhard | 123 | CLE |
| +021+ | 2.77 | Weldon Henley | 117.7 | OAK |
| +023+ | 2.64 | Fred Glade | 95.7 | BAL |
| +024+ | 2.55 | Jack Taylor | 138 | SLN |
| +027+ | 2.45 | Patsy Flaherty | 96 | TOT |
| +031+ | 2.15 | Jack Powell | 138.7 | NYA |
| +033+ | 2.04 | Barney Pelty | 104.3 | BAL |
| +037+ | 1.75 | Norwood Gibson | 89 | BOS |
| +038+ | 1.68 | Nick Altrock | 129.3 | CHA |
| +044+ | 1.53 | Earl Moore | 99.7 | CLE |
| +046+ | 1.49 | Casey Patten | 154 | MIN |
| +047+ | 1.44 | Sam Leever | 108 | PIT |
| +050+ | 1.38 | Chief Bender | 60 | OAK |
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