| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.95 | 190404250_BOS_OAK |
| Cy Young | BOS | 6.95 | 190404250_BOS_OAK |
| Sam Leever | PIT | 3.81 | 190404240_PIT_CIN |
| Ed Siever | BAL | 3.35 | 190404250_BAL_DET |
| Christy Mathewson | SFN | 3.03 | 190404250_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jesse Stovall | DET | -1.47 | 190404260_BAL_DET |
| Chick Fraser | PHI | -0.82 | 190404260_PHI_ATL |
| Weldon Henley | OAK | -0.55 | 190404260_BOS_OAK |
| Ed Poole | LAN | -0.54 | 190404250_LAN_SFN |
| Win Kellum | CIN | -0.52 | 190404240_PIT_CIN |
Based on accumulated WAA for this season up to 1904-04-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.1 | Togie Pittinger | 27 | ATL |
| +002+ | 1.96 | Rube Waddell | 30 | OAK |
| +004+ | 1.59 | Joe McGinnity | 32 | SFN |
| +005+ | 1.46 | Red Donahue | 18 | CLE |
| +006+ | 1.45 | Bill Bernhard | 27 | CLE |
| +008+ | 1.45 | Norwood Gibson | 18 | BOS |
| +007+ | 1.45 | Jesse Tannehill | 18 | BOS |
| XXXXX | 1.09 | Jack Chesbro | 27 | NYA |
| XXXXX | 0.99 | Frank Owen | 27 | CHA |
| XXXXX | 0.94 | Ed Killian | 32 | DET |
| XXXXX | 0.91 | Jack Powell | 29.7 | NYA |
| XXXXX | 0.83 | Cy Young | 25 | BOS |
| XXXXX | 0.83 | George Winter | 9 | BOS |
| XXXXX | 0.82 | Bill Dinneen | 18 | BOS |
| XXXXX | 0.79 | Oscar Jones | 36 | LAN |
| XXXXX | 0.76 | Barney Pelty | 34 | BAL |
| XXXXX | 0.75 | Weldon Henley | 28 | OAK |
| XXXXX | 0.66 | Harry Howell | 10 | BAL |
| XXXXX | 0.62 | Patsy Flaherty | 16 | CHA |
| XXXXX | 0.6 | John McPherson | 23 | PHI |
| XXXXX | 0.59 | Doc White | 18 | CHA |
| XXXXX | 0.59 | Otto Hess | 8.7 | CLE |
| XXXXX | 0.57 | Casey Patten | 27 | MIN |
| XXXXX | 0.54 | Chick Fraser | 17 | PHI |
| XXXXX | 0.5 | Chief Bender | 9 | OAK |
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