| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Poole | LAN | -2.04 | 190405100_LAN_CIN |
| Johnny Lush | PHI | -1.65 | 190405090_PHI_PIT |
| Joe Corbett | SLN | -0.92 | 190405090_SFN_SLN |
| Noodles Hahn | CIN | -0.86 | 190405100_LAN_CIN |
| Roscoe Miller | PIT | -0.72 | 190405100_PHI_PIT |
Based on accumulated WAA for this season up to 1904-05-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.33 | Rube Waddell | 56 | OAK |
| +002+ | 2.9 | Joe McGinnity | 60 | SFN |
| +003+ | 2.59 | Norwood Gibson | 36 | BOS |
| +004+ | 2.27 | Red Donahue | 35 | CLE |
| +006+ | 2.2 | Cy Young | 41 | BOS |
| +005+ | 2.2 | Jack Powell | 47.7 | NYA |
| +008+ | 1.96 | Jesse Tannehill | 36 | BOS |
| +009+ | 1.93 | Frank Owen | 53 | CHA |
| +014+ | 1.6 | Harry Howell | 27.3 | BAL |
| +016+ | 1.57 | Bill Dinneen | 41 | BOS |
| +017+ | 1.55 | Ed Killian | 50 | DET |
| +018+ | 1.51 | Patsy Flaherty | 43 | CHA |
| +019+ | 1.46 | Dummy Taylor | 42 | SFN |
| +021+ | 1.32 | Jack Cronin | 55 | LAN |
| +024+ | 1.26 | Bill Bernhard | 45 | CLE |
| XXXXX | 1.22 | Jake Weimer | 35.3 | CHN |
| XXXXX | 1.19 | Jack Chesbro | 53 | NYA |
| XXXXX | 1.17 | Weldon Henley | 45 | OAK |
| XXXXX | 0.95 | Claude Elliott | 34 | CIN |
| XXXXX | 0.84 | Fred Glade | 17 | BAL |
| XXXXX | 0.84 | Doc White | 30 | CHA |
| XXXXX | 0.82 | Eddie Plank | 51 | OAK |
| XXXXX | 0.8 | Earl Moore | 9 | CLE |
| XXXXX | 0.77 | George Winter | 11 | BOS |
| XXXXX | 0.77 | Bill Donovan | 45 | DET |
_