| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 6.62 | 190409092_NYA_OAK |
| Jack Chesbro | NYA | 5.67 | 190409081_NYA_OAK |
| Frank Owen | CHA | 3.42 | 190409082_CHA_CLE |
| Joe McGinnity | SFN | 3.37 | 190409091_PHI_SFN |
| Cy Young | BOS | 2.56 | 190409100_BOS_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -9.59 | 190409102_LAN_ATL |
| Bill Duggleby | PHI | -6.56 | 190409081_PHI_SFN |
| Oscar Jones | LAN | -1.37 | 190409082_LAN_ATL |
| Jesse Stovall | DET | -1.28 | 190409082_BAL_DET |
| Happy Townsend | MIN | -0.57 | 190409081_BOS_MIN |
Based on accumulated WAA for this season up to 1904-09-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.48 | Rube Waddell | 347.7 | OAK |
| +002+ | 12.54 | Jack Chesbro | 357.7 | NYA |
| +003+ | 10.07 | Eddie Plank | 317 | OAK |
| +004+ | 9.89 | Frank Owen | 306 | CHA |
| +005+ | 9.84 | Joe McGinnity | 358.3 | SFN |
| +006+ | 8.58 | Cy Young | 312 | BOS |
| +008+ | 7.87 | Jesse Tannehill | 256.7 | BOS |
| +009+ | 6.44 | Bill Dinneen | 251.7 | BOS |
| +010+ | 6.1 | Harry Howell | 249.7 | BAL |
| +011+ | 6.03 | Bill Bernhard | 270 | CLE |
| +012+ | 5.86 | Red Donahue | 233 | CLE |
| +015+ | 5.6 | Ed Killian | 301.7 | DET |
| +017+ | 5.34 | Fred Glade | 239.7 | BAL |
| +018+ | 5.24 | Jack Powell | 317.7 | NYA |
| +019+ | 5.18 | Earl Moore | 216.3 | CLE |
| +020+ | 5.06 | Addie Joss | 142.3 | CLE |
| +022+ | 4.92 | Kid Nichols | 265 | SLN |
| +024+ | 4.9 | George Mullin | 315 | DET |
| +025+ | 4.8 | Jake Weimer | 254.7 | CHN |
| +026+ | 4.74 | Norwood Gibson | 208 | BOS |
| +029+ | 4.55 | Doc White | 160 | CHA |
| +030+ | 4.41 | Frank Smith | 174.3 | CHA |
| +033+ | 4.24 | Bill Donovan | 260.3 | DET |
| +038+ | 3.92 | Weldon Henley | 239.7 | OAK |
| +041+ | 3.53 | Otto Hess | 101.3 | CLE |
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