| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 6.08 | 190407160_CLE_BOS |
| Joe McGinnity | SFN | 6.07 | 190407160_SFN_PIT |
| Jack Taylor | SLN | 2.01 | 190407160_ATL_SLN |
| Frank Owen | CHA | 1.71 | 190407180_CHA_MIN |
| Red Donahue | CLE | 0.98 | 190407180_CLE_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -5.84 | 190407170_PHI_CHN |
| Vic Willis | ATL | -2.87 | 190407160_ATL_SLN |
| Oscar Jones | LAN | -1.22 | 190407180_LAN_CIN |
| Jesse Stovall | DET | -0.97 | 190407180_DET_NYA |
| Buttons Briggs | CHN | -0.68 | 190407170_PHI_CHN |
Based on accumulated WAA for this season up to 1904-07-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.99 | Rube Waddell | 196.3 | OAK |
| +002+ | 7.72 | Joe McGinnity | 239 | SFN |
| +003+ | 7.59 | Jack Chesbro | 224 | NYA |
| +004+ | 7.34 | Cy Young | 190 | BOS |
| +005+ | 6.4 | Frank Owen | 187.7 | CHA |
| +006+ | 5.73 | Eddie Plank | 190 | OAK |
| +008+ | 4.75 | Red Donahue | 126 | CLE |
| +010+ | 4.59 | Jesse Tannehill | 148.7 | BOS |
| +011+ | 4.3 | Ed Killian | 188 | DET |
| +013+ | 3.95 | Patsy Flaherty | 141 | TOT |
| +016+ | 3.57 | Jack Taylor | 183 | SLN |
| +017+ | 3.56 | Harry Howell | 143.7 | BAL |
| +018+ | 3.54 | Norwood Gibson | 123 | BOS |
| +021+ | 3.31 | George Mullin | 208 | DET |
| +022+ | 3.22 | Nick Altrock | 164.3 | CHA |
| +024+ | 3.12 | Bill Dinneen | 130.7 | BOS |
| +028+ | 2.85 | Ed Siever | 137.3 | BAL |
| +029+ | 2.8 | Earl Moore | 137.7 | CLE |
| +031+ | 2.67 | Weldon Henley | 145.7 | OAK |
| +033+ | 2.61 | Kid Nichols | 149 | SLN |
| +037+ | 2.49 | Doc White | 112 | CHA |
| +038+ | 2.4 | Frank Smith | 65 | CHA |
| +039+ | 2.35 | Fred Glade | 125.7 | BAL |
| +041+ | 2.28 | Jack Powell | 184.7 | NYA |
| +045+ | 2.1 | Jake Weimer | 141.7 | CHN |
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