| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.95 | 190404250_BOS_OAK |
| Cy Young | BOS | 6.95 | 190404250_BOS_OAK |
| Bill Donovan | DET | 3.95 | 190404270_CHA_DET |
| 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 |
| Highball Wilson | MIN | -0.43 | 190404250_NYA_MIN |
Based on accumulated WAA for this season up to 1904-04-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.07 | Togie Pittinger | 27 | ATL |
| +002+ | 1.94 | Rube Waddell | 30 | OAK |
| +004+ | 1.57 | Joe McGinnity | 32 | SFN |
| +005+ | 1.45 | Red Donahue | 18 | CLE |
| +007+ | 1.43 | Norwood Gibson | 18 | BOS |
| +006+ | 1.43 | Jesse Tannehill | 18 | BOS |
| +008+ | 1.43 | Bill Bernhard | 27 | CLE |
| XXXXX | 1.14 | Patsy Flaherty | 24 | CHA |
| XXXXX | 1.07 | Jack Chesbro | 27 | NYA |
| XXXXX | 0.99 | Frank Owen | 27 | CHA |
| XXXXX | 0.98 | Ed Killian | 32 | DET |
| XXXXX | 0.88 | Jack Powell | 29.7 | NYA |
| XXXXX | 0.82 | George Winter | 9 | BOS |
| XXXXX | 0.81 | Cy Young | 25 | BOS |
| XXXXX | 0.8 | Bill Dinneen | 18 | BOS |
| XXXXX | 0.76 | Oscar Jones | 36 | LAN |
| XXXXX | 0.74 | Barney Pelty | 34 | BAL |
| XXXXX | 0.73 | Weldon Henley | 28 | OAK |
| XXXXX | 0.7 | Bill Donovan | 28 | DET |
| XXXXX | 0.65 | Harry Howell | 10 | BAL |
| XXXXX | 0.59 | John McPherson | 23 | PHI |
| XXXXX | 0.59 | Otto Hess | 8.7 | CLE |
| XXXXX | 0.59 | Doc White | 18 | CHA |
| XXXXX | 0.55 | Casey Patten | 27 | MIN |
| XXXXX | 0.53 | Chick Fraser | 17 | PHI |
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