| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 11.3 | 190406130_OAK_CLE |
| Joe McGinnity | SFN | 9.86 | 190406150_SLN_SFN |
| Cy Young | BOS | 8.18 | 190406150_BOS_CHA |
| Jack Taylor | SLN | 2.74 | 190406150_SLN_SFN |
| Sam Leever | PIT | 2.61 | 190406150_PIT_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -2.28 | 190406150_PIT_PHI |
| Jack Harper | CIN | -1.73 | 190406152_CIN_LAN |
| Davey Dunkle | MIN | -1.17 | 190406150_MIN_CLE |
| Ed Poole | LAN | -1.12 | 190406140_CIN_LAN |
| Kaiser Wilhelm | ATL | -0.69 | 190406130_PIT_ATL |
Based on accumulated WAA for this season up to 1904-06-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.2 | Rube Waddell | 141 | OAK |
| +002+ | 6.88 | Joe McGinnity | 156 | SFN |
| +003+ | 5.45 | Red Donahue | 100 | CLE |
| +004+ | 5.39 | Cy Young | 118 | BOS |
| +005+ | 4.67 | Jack Chesbro | 146 | NYA |
| +006+ | 4.51 | Frank Owen | 118.7 | CHA |
| +007+ | 4.47 | Bill Dinneen | 111.7 | BOS |
| +008+ | 4.12 | Jesse Tannehill | 104.7 | BOS |
| +013+ | 3 | Eddie Plank | 128 | OAK |
| +015+ | 2.71 | Ed Killian | 127.3 | DET |
| +016+ | 2.59 | Harry Howell | 97.7 | BAL |
| +021+ | 2.22 | Bill Bernhard | 109 | CLE |
| +022+ | 2.18 | Weldon Henley | 99.7 | OAK |
| +023+ | 2.17 | Barney Pelty | 86.3 | BAL |
| +026+ | 2 | Patsy Flaherty | 61 | TOT |
| +025+ | 2 | Jack Taylor | 110 | SLN |
| +029+ | 1.84 | Sam Leever | 89 | PIT |
| +030+ | 1.64 | George Mullin | 139 | DET |
| +044+ | 1.32 | Norwood Gibson | 72 | BOS |
| +043+ | 1.32 | Fred Glade | 77.7 | BAL |
| +045+ | 1.29 | Casey Patten | 118 | MIN |
| XXXXX | 1.23 | Ed Siever | 85 | BAL |
| XXXXX | 1.13 | Bill Donovan | 111 | DET |
| XXXXX | 1.06 | Jack Powell | 111.7 | NYA |
| XXXXX | 1.05 | George Winter | 34.3 | BOS |
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