| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 10.22 | 190405070_MIN_OAK |
| Joe McGinnity | SFN | 7.58 | 190405090_SFN_SLN |
| Bill Dinneen | BOS | 4.26 | 190405070_NYA_BOS |
| Sam Leever | PIT | 3.55 | 190405070_PHI_PIT |
| Bill Donovan | DET | 3.32 | 190405070_DET_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Lush | PHI | -1.65 | 190405090_PHI_PIT |
| Joe Corbett | SLN | -0.92 | 190405090_SFN_SLN |
| Ed Poole | LAN | -0.86 | 190405070_LAN_CIN |
| Beany Jacobson | MIN | -0.72 | 190405070_MIN_OAK |
| Willie Sudhoff | BAL | -0.6 | 190405070_BAL_CHA |
Based on accumulated WAA for this season up to 1904-05-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.31 | Rube Waddell | 56 | OAK |
| +002+ | 2.83 | Joe McGinnity | 60 | SFN |
| +003+ | 2.25 | Red Donahue | 35 | CLE |
| +004+ | 2.19 | Cy Young | 41 | BOS |
| +006+ | 1.99 | Norwood Gibson | 27 | BOS |
| +007+ | 1.95 | Jesse Tannehill | 36 | BOS |
| +008+ | 1.91 | Frank Owen | 53 | CHA |
| +012+ | 1.59 | Harry Howell | 27.3 | BAL |
| +013+ | 1.56 | Bill Dinneen | 41 | BOS |
| +014+ | 1.53 | Ed Killian | 50 | DET |
| +015+ | 1.5 | Patsy Flaherty | 43 | CHA |
| +016+ | 1.41 | Jack Powell | 38.7 | NYA |
| +017+ | 1.41 | Dummy Taylor | 42 | SFN |
| +021+ | 1.27 | Jack Cronin | 55 | LAN |
| XXXXX | 1.25 | Bill Bernhard | 45 | CLE |
| XXXXX | 1.2 | Jake Weimer | 35.3 | CHN |
| XXXXX | 1.17 | Jack Chesbro | 53 | NYA |
| XXXXX | 1.15 | Weldon Henley | 45 | OAK |
| XXXXX | 0.93 | Claude Elliott | 34 | CIN |
| XXXXX | 0.83 | Doc White | 30 | CHA |
| XXXXX | 0.83 | Fred Glade | 17 | BAL |
| XXXXX | 0.8 | Earl Moore | 9 | CLE |
| XXXXX | 0.8 | Eddie Plank | 51 | OAK |
| XXXXX | 0.77 | George Winter | 11 | BOS |
| XXXXX | 0.75 | Bill Donovan | 45 | DET |
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