| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe McGinnity | SFN | 10.31 | 190406040_CIN_SFN |
| Bill Dinneen | BOS | 4.92 | 190406020_BOS_CLE |
| Jack Taylor | SLN | 3.01 | 190406030_SLN_ATL |
| Eddie Plank | OAK | 2.33 | 190406040_OAK_BAL |
| Sam Leever | PIT | 2.13 | 190406040_PIT_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| John McPherson | PHI | -1.72 | 190406040_CHN_PHI |
| Jack Harper | CIN | -1.51 | 190406040_CIN_SFN |
| Ed Poole | LAN | -1.42 | 190406030_PIT_LAN |
| Happy Townsend | MIN | -0.65 | 190406020_MIN_CHA |
| Dummy Taylor | SFN | -0.25 | 190406030_CIN_SFN |
Based on accumulated WAA for this season up to 1904-06-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.37 | Rube Waddell | 112 | OAK |
| +002+ | 5.86 | Joe McGinnity | 126 | SFN |
| +003+ | 4.59 | Red Donahue | 82 | CLE |
| +004+ | 4.3 | Jesse Tannehill | 87.7 | BOS |
| +005+ | 4.23 | Cy Young | 92 | BOS |
| +006+ | 4.19 | Jack Chesbro | 128 | NYA |
| +007+ | 3.4 | Frank Owen | 89 | CHA |
| +008+ | 3.38 | Bill Dinneen | 86.7 | BOS |
| +013+ | 2.66 | Norwood Gibson | 62 | BOS |
| +016+ | 2.45 | Eddie Plank | 113 | OAK |
| +020+ | 1.9 | Ed Killian | 105.3 | DET |
| +021+ | 1.88 | Harry Howell | 72.7 | BAL |
| +025+ | 1.64 | Jake Weimer | 78.3 | CHN |
| +031+ | 1.36 | Weldon Henley | 83.3 | OAK |
| +036+ | 1.29 | Ed Siever | 76 | BAL |
| XXXXX | 1.22 | Jack Taylor | 83 | SLN |
| XXXXX | 1.15 | Bill Bernhard | 86 | CLE |
| XXXXX | 1.1 | Earl Moore | 53 | CLE |
| XXXXX | 1.02 | Casey Patten | 94.7 | MIN |
| XXXXX | 0.99 | Fred Glade | 63.7 | BAL |
| XXXXX | 0.91 | Nick Altrock | 76.3 | CHA |
| XXXXX | 0.88 | Jack Powell | 94.7 | NYA |
| XXXXX | 0.88 | Barney Pelty | 59.3 | BAL |
| XXXXX | 0.86 | Chappie McFarland | 61 | SLN |
| XXXXX | 0.82 | Togie Pittinger | 97.3 | ATL |
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