| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.98 | 190407231_CLE_OAK |
| Joe McGinnity | SFN | 5.6 | 190407210_SFN_CHN |
| Cy Young | BOS | 4.8 | 190407220_BAL_BOS |
| Jack Chesbro | NYA | 3.56 | 190407230_CHA_NYA |
| Frank Owen | CHA | 1.73 | 190407210_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -7.76 | 190407220_PHI_SLN |
| Tom Fisher | ATL | -7.51 | 190407232_ATL_CIN |
| Joe Corbett | SLN | -2.28 | 190407231_PHI_SLN |
| Happy Townsend | MIN | -1.61 | 190407231_DET_MIN |
| Jack Harper | CIN | -1.37 | 190407222_ATL_CIN |
Based on accumulated WAA for this season up to 1904-07-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.34 | Rube Waddell | 216.3 | OAK |
| +002+ | 8.5 | Jack Chesbro | 244 | NYA |
| +003+ | 7.78 | Joe McGinnity | 244.3 | SFN |
| +004+ | 6.6 | Cy Young | 203.3 | BOS |
| +005+ | 6.47 | Frank Owen | 196.7 | CHA |
| +006+ | 6.29 | Eddie Plank | 208 | OAK |
| +009+ | 5.07 | Ed Killian | 201 | DET |
| +010+ | 4.18 | Harry Howell | 151.7 | BAL |
| +011+ | 4.16 | Jesse Tannehill | 157.7 | BOS |
| +015+ | 4.04 | Patsy Flaherty | 150 | TOT |
| +016+ | 3.97 | Norwood Gibson | 132 | BOS |
| +017+ | 3.84 | Bill Dinneen | 153.7 | BOS |
| +018+ | 3.7 | Red Donahue | 135 | CLE |
| +019+ | 3.7 | Earl Moore | 157.7 | CLE |
| +020+ | 3.5 | Fred Glade | 145.7 | BAL |
| +023+ | 3.38 | Bill Bernhard | 174 | CLE |
| +024+ | 3.27 | Frank Smith | 78.3 | CHA |
| +026+ | 3.22 | Jack Taylor | 192 | SLN |
| +030+ | 2.92 | Ed Siever | 146.3 | BAL |
| +035+ | 2.73 | Nick Altrock | 169 | CHA |
| +036+ | 2.7 | Bill Donovan | 180.7 | DET |
| +037+ | 2.63 | George Mullin | 216 | DET |
| +038+ | 2.48 | Kid Nichols | 158 | SLN |
| +039+ | 2.46 | Doc White | 112 | CHA |
| +047+ | 2.11 | Addie Joss | 75.7 | CLE |
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