| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 6.03 | 190407060_BOS_MIN |
| Jack Chesbro | NYA | 2.58 | 190407070_BOS_NYA |
| Eddie Plank | OAK | 2.44 | 190407080_MIN_OAK |
| Jack Taylor | SLN | 2.28 | 190407061_CIN_SLN |
| Frank Owen | CHA | 1.89 | 190407070_CHA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Harper | CIN | -1.76 | 190407061_CIN_SLN |
| Tully Sparks | PHI | -1.69 | 190407080_PHI_CIN |
| Roscoe Miller | PIT | -1.04 | 190407080_ATL_PIT |
| Kaiser Wilhelm | ATL | -0.99 | 190407080_ATL_PIT |
| Happy Townsend | MIN | -0.92 | 190407080_MIN_OAK |
Based on accumulated WAA for this season up to 1904-07-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.17 | Joe McGinnity | 209 | SFN |
| +002+ | 7.76 | Rube Waddell | 178.3 | OAK |
| +003+ | 6.89 | Jack Chesbro | 200 | NYA |
| +004+ | 6.49 | Frank Owen | 171.7 | CHA |
| +005+ | 6.18 | Cy Young | 163 | BOS |
| +006+ | 5.75 | Red Donahue | 116.7 | CLE |
| +007+ | 4.5 | Eddie Plank | 172 | OAK |
| +008+ | 4.25 | Jesse Tannehill | 131.7 | BOS |
| +012+ | 4.03 | George Mullin | 192 | DET |
| +013+ | 4.02 | Harry Howell | 124.7 | BAL |
| +015+ | 3.43 | Ed Killian | 173 | DET |
| +019+ | 3.2 | Bill Bernhard | 141 | CLE |
| +020+ | 3.17 | Patsy Flaherty | 114 | TOT |
| +021+ | 3.12 | Bill Dinneen | 130.7 | BOS |
| +023+ | 3.07 | Jack Taylor | 156 | SLN |
| +024+ | 3.07 | Norwood Gibson | 107 | BOS |
| +026+ | 2.53 | Ed Siever | 127 | BAL |
| +030+ | 2.39 | Weldon Henley | 126.7 | OAK |
| +032+ | 2.31 | George Winter | 69.3 | BOS |
| +035+ | 2.23 | Jake Weimer | 130.7 | CHN |
| +036+ | 2.19 | Nick Altrock | 147.3 | CHA |
| +042+ | 1.89 | Earl Moore | 113.3 | CLE |
| +044+ | 1.88 | Barney Pelty | 113.3 | BAL |
| +043+ | 1.88 | Frank Kitson | 61 | DET |
| +047+ | 1.81 | Kid Nichols | 131 | SLN |
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