| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Chesbro | NYA | 6.38 | 190409202_NYA_MIN |
| Eddie Plank | OAK | 3.43 | 190409190_OAK_BOS |
| Cy Young | BOS | 2.52 | 190409200_OAK_BOS |
| Harry Howell | BAL | 1.51 | 190409201_CLE_BAL |
| Bill Bernhard | CLE | 1.37 | 190409191_CLE_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Oscar Jones | LAN | -2.34 | 190409201_PIT_LAN |
| Jack Sutthoff | PHI | -1.95 | 190409190_ATL_PHI |
| Togie Pittinger | ATL | -1.48 | 190409190_ATL_PHI |
| Happy Townsend | MIN | -0.67 | 190409190_NYA_MIN |
| Willie Sudhoff | BAL | -0.57 | 190409191_CLE_BAL |
Based on accumulated WAA for this season up to 1904-09-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.82 | Jack Chesbro | 392.7 | NYA |
| +002+ | 13.11 | Rube Waddell | 352.7 | OAK |
| +003+ | 10.29 | Eddie Plank | 335 | OAK |
| +004+ | 10.19 | Joe McGinnity | 376.3 | SFN |
| +005+ | 10.09 | Frank Owen | 315 | CHA |
| +006+ | 8.94 | Cy Young | 330 | BOS |
| +008+ | 7.82 | Jesse Tannehill | 281.7 | BOS |
| +009+ | 7.07 | Harry Howell | 273.7 | BAL |
| +010+ | 6.81 | Bill Bernhard | 290.7 | CLE |
| +011+ | 6.49 | Doc White | 187 | CHA |
| +012+ | 6.2 | Addie Joss | 165.3 | CLE |
| +015+ | 6.03 | Bill Dinneen | 274.7 | BOS |
| +016+ | 5.9 | George Mullin | 335 | DET |
| +017+ | 5.69 | Ed Killian | 317.7 | DET |
| +018+ | 5.67 | Jack Powell | 340.7 | NYA |
| +019+ | 5.51 | Earl Moore | 227.3 | CLE |
| +022+ | 5.17 | Fred Glade | 259.7 | BAL |
| +024+ | 4.94 | Red Donahue | 250 | CLE |
| +025+ | 4.83 | Norwood Gibson | 231 | BOS |
| +029+ | 4.49 | Weldon Henley | 255.7 | OAK |
| +030+ | 4.47 | Jake Weimer | 263.7 | CHN |
| +036+ | 3.98 | Kid Nichols | 283 | SLN |
| +042+ | 3.54 | Otto Hess | 114.3 | CLE |
| +043+ | 3.51 | Bill Donovan | 279 | DET |
| +045+ | 3.45 | Patsy Flaherty | 255 | TOT |
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