| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.87 | 190407091_MIN_OAK |
| Cy Young | BOS | 6.75 | 190407090_BOS_NYA |
| Jack Chesbro | NYA | 2.92 | 190407090_BOS_NYA |
| Jack Taylor | SLN | 1.89 | 190407091_SFN_SLN |
| Frank Owen | CHA | 1.89 | 190407070_CHA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Willis | ATL | -2.42 | 190407090_ATL_PIT |
| Tully Sparks | PHI | -1.69 | 190407080_PHI_CIN |
| Roscoe Miller | PIT | -1.04 | 190407080_ATL_PIT |
| Ed Poole | LAN | -0.99 | 190407090_LAN_CHN |
| Happy Townsend | MIN | -0.92 | 190407080_MIN_OAK |
Based on accumulated WAA for this season up to 1904-07-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.43 | Rube Waddell | 187.3 | OAK |
| +002+ | 8.14 | Joe McGinnity | 212 | SFN |
| +003+ | 7.13 | Jack Chesbro | 209 | NYA |
| +004+ | 6.85 | Cy Young | 172 | BOS |
| +005+ | 6.43 | Frank Owen | 171.7 | CHA |
| +007+ | 4.68 | Harry Howell | 133.7 | BAL |
| +008+ | 4.42 | Eddie Plank | 172 | OAK |
| +009+ | 4.2 | Jesse Tannehill | 131.7 | BOS |
| +014+ | 3.95 | George Mullin | 192 | DET |
| +015+ | 3.88 | Patsy Flaherty | 123 | TOT |
| +017+ | 3.36 | Ed Killian | 173 | DET |
| +020+ | 3.12 | Bill Bernhard | 141 | CLE |
| +022+ | 3.07 | Bill Dinneen | 130.7 | BOS |
| +023+ | 3.03 | Norwood Gibson | 107 | BOS |
| +024+ | 2.87 | Nick Altrock | 156.3 | CHA |
| +026+ | 2.71 | Jack Taylor | 165 | SLN |
| +028+ | 2.49 | Ed Siever | 127 | BAL |
| +034+ | 2.28 | George Winter | 69.3 | BOS |
| +035+ | 2.28 | Jake Weimer | 139.7 | CHN |
| +036+ | 2.25 | Earl Moore | 123.3 | CLE |
| +041+ | 2 | Weldon Henley | 127.7 | OAK |
| +044+ | 1.86 | Frank Kitson | 61 | DET |
| +045+ | 1.85 | Barney Pelty | 113.3 | BAL |
| +047+ | 1.75 | Kid Nichols | 131 | SLN |
| +049+ | 1.72 | Fred Glade | 111.7 | BAL |
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