| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe McGinnity | SFN | 7.45 | 190404290_ATL_SFN |
| Bill Dinneen | BOS | 4.15 | 190404290_BOS_MIN |
| Ed Siever | BAL | 1.79 | 190405010_CHA_BAL |
| Eddie Plank | OAK | 1.59 | 190404300_NYA_OAK |
| Deacon Phillippe | PIT | 0.85 | 190404300_CHN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Harper | CIN | -3.61 | 190404290_CIN_SLN |
| Jesse Stovall | DET | -1.44 | 190404300_CHA_DET |
| Pat Carney | ATL | -1.06 | 190404300_ATL_SFN |
| Mike O'Neill | SLN | -0.58 | 190404300_CIN_SLN |
| Roscoe Miller | PIT | -0.47 | 190405010_PIT_CHN |
Based on accumulated WAA for this season up to 1904-05-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.05 | Togie Pittinger | 27 | ATL |
| +001+ | 2.05 | Joe McGinnity | 41 | SFN |
| +004+ | 1.91 | Rube Waddell | 30 | OAK |
| +007+ | 1.48 | Patsy Flaherty | 33 | CHA |
| +008+ | 1.48 | Cy Young | 32 | BOS |
| +009+ | 1.45 | Norwood Gibson | 18 | BOS |
| +010+ | 1.45 | Jesse Tannehill | 18 | BOS |
| +011+ | 1.4 | Red Donahue | 18 | CLE |
| +012+ | 1.27 | Harry Howell | 19 | BAL |
| XXXXX | 1.12 | Bill Bernhard | 36 | CLE |
| XXXXX | 1.07 | Bill Dinneen | 23 | BOS |
| XXXXX | 1.04 | Ed Killian | 41 | DET |
| XXXXX | 0.86 | Jack Powell | 29.7 | NYA |
| XXXXX | 0.81 | Barney Pelty | 34 | BAL |
| XXXXX | 0.8 | George Winter | 11 | BOS |
| XXXXX | 0.77 | Nick Altrock | 27 | CHA |
| XXXXX | 0.7 | Weldon Henley | 28 | OAK |
| XXXXX | 0.68 | Frank Owen | 36 | CHA |
| XXXXX | 0.68 | Oscar Jones | 36 | LAN |
| XXXXX | 0.62 | Casey Patten | 27 | MIN |
| XXXXX | 0.59 | Bill Donovan | 28 | DET |
| XXXXX | 0.56 | Otto Hess | 8.7 | CLE |
| XXXXX | 0.54 | Eddie Plank | 34 | OAK |
| XXXXX | 0.54 | John McPherson | 23 | PHI |
| XXXXX | 0.49 | Chick Fraser | 17 | PHI |
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