| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Dinneen | BOS | 5.02 | 190405200_BAL_BOS |
| Doc White | CHA | 4.03 | 190405200_CHA_NYA |
| Jack Taylor | SLN | 3.17 | 190405190_PHI_SLN |
| Sam Leever | PIT | 2.61 | 190405200_ATL_PIT |
| Ed Siever | BAL | 2.6 | 190405200_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Harper | CIN | -2.6 | 190405200_PHI_CIN |
| Johnny Lush | PHI | -2 | 190405200_PHI_CIN |
| Ed Poole | LAN | -1.01 | 190405190_LAN_CHN |
| Cy Morgan | BAL | -0.94 | 190405180_BAL_OAK |
| Jesse Stovall | DET | -0.9 | 190405200_DET_MIN |
Based on accumulated WAA for this season up to 1904-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.51 | Joe McGinnity | 78 | SFN |
| +002+ | 4.38 | Rube Waddell | 85 | OAK |
| +003+ | 3.62 | Red Donahue | 53 | CLE |
| +004+ | 3.38 | Cy Young | 65 | BOS |
| +005+ | 2.66 | Bill Dinneen | 59 | BOS |
| +006+ | 2.55 | Jesse Tannehill | 47.7 | BOS |
| +007+ | 2.53 | Norwood Gibson | 45 | BOS |
| +008+ | 2.53 | Frank Owen | 71 | CHA |
| +009+ | 2.5 | Ed Killian | 78.3 | DET |
| +010+ | 2.45 | Jack Chesbro | 92 | NYA |
| +021+ | 1.57 | Casey Patten | 76.7 | MIN |
| +024+ | 1.47 | Bill Bernhard | 62 | CLE |
| +027+ | 1.44 | Harry Howell | 40.3 | BAL |
| +032+ | 1.27 | Weldon Henley | 67.3 | OAK |
| XXXXX | 1.23 | Fred Glade | 37.7 | BAL |
| XXXXX | 1.21 | Jack Powell | 64.7 | NYA |
| XXXXX | 1.19 | Eddie Plank | 69 | OAK |
| XXXXX | 0.95 | Chappie McFarland | 44 | SLN |
| XXXXX | 0.94 | Kaiser Wilhelm | 53 | ATL |
| XXXXX | 0.9 | Ed Walsh | 21 | CHA |
| XXXXX | 0.81 | Jake Weimer | 58.3 | CHN |
| XXXXX | 0.65 | Jack Taylor | 62 | SLN |
| XXXXX | 0.65 | Jack Cronin | 71 | LAN |
| XXXXX | 0.62 | Chief Bender | 18 | OAK |
| XXXXX | 0.62 | Doc White | 48 | CHA |
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