| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.4 | 190404210_NYA_OAK |
| Cy Young | BOS | 5.54 | 190404192_MIN_BOS |
| Joe McGinnity | SFN | 4.11 | 190404190_SFN_PHI |
| Jack Taylor | SLN | 4.09 | 190404190_CHN_SLN |
| Deacon Phillippe | PIT | 3.74 | 190404190_PIT_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Chick Fraser | PHI | -1.04 | 190404210_PHI_SFN |
| Roscoe Miller | PIT | -0.93 | 190404200_PIT_CIN |
| Frank Owen | CHA | -0.72 | 190404190_DET_CHA |
| Noodles Hahn | CIN | -0.45 | 190404210_CIN_PIT |
| Bob Rhoads | CLE | -0.23 | 190404190_CLE_BAL |
Based on accumulated WAA for this season up to 1904-04-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 1.42 | Togie Pittinger | 18 | ATL |
| +003+ | 1.3 | Ed Killian | 20 | DET |
| XXXXX | 1.21 | Rube Waddell | 21 | OAK |
| XXXXX | 1.19 | Bill Bernhard | 18 | CLE |
| XXXXX | 1.18 | Joe McGinnity | 25 | SFN |
| XXXXX | 0.91 | Red Donahue | 9 | CLE |
| XXXXX | 0.89 | George Winter | 9 | BOS |
| XXXXX | 0.89 | Jesse Tannehill | 9 | BOS |
| XXXXX | 0.89 | Norwood Gibson | 9 | BOS |
| XXXXX | 0.88 | John McPherson | 15 | PHI |
| XXXXX | 0.87 | Patsy Flaherty | 9 | CHA |
| XXXXX | 0.69 | Frank Owen | 18 | CHA |
| XXXXX | 0.67 | Barney Pelty | 12 | BAL |
| XXXXX | 0.66 | Bill Donovan | 9 | DET |
| XXXXX | 0.49 | Chief Bender | 9 | OAK |
| XXXXX | 0.47 | Davey Dunkle | 8 | MIN |
| XXXXX | 0.45 | Doc White | 9 | CHA |
| XXXXX | 0.44 | Dummy Taylor | 9 | SFN |
| XXXXX | 0.44 | Chick Fraser | 9 | PHI |
| XXXXX | 0.43 | Jack Powell | 20.7 | NYA |
| XXXXX | 0.41 | Ed Poole | 17 | LAN |
| XXXXX | 0.4 | Willie Sudhoff | 9 | BAL |
| XXXXX | 0.4 | Jack Chesbro | 18 | NYA |
| XXXXX | 0.38 | George Mullin | 17 | DET |
| XXXXX | 0.37 | Ed Siever | 18 | BAL |
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