| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Chesbro | NYA | 5.71 | 190409161_NYA_BOS |
| Rube Waddell | OAK | 5.67 | 190409152_MIN_OAK |
| Joe McGinnity | SFN | 3.32 | 190409162_LAN_SFN |
| Cy Young | BOS | 2.24 | 190409162_NYA_BOS |
| Harry Howell | BAL | 1.35 | 190409171_CHA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vic Willis | ATL | -4.17 | 190409171_ATL_PHI |
| Chick Fraser | PHI | -3.4 | 190409172_ATL_PHI |
| Chappie McFarland | SLN | -2.49 | 190409170_PIT_SLN |
| Oscar Jones | LAN | -2.1 | 190409161_LAN_SFN |
| Jesse Stovall | DET | -0.98 | 190409161_DET_CLE |
Based on accumulated WAA for this season up to 1904-09-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.34 | Jack Chesbro | 384.7 | NYA |
| +002+ | 13.22 | Rube Waddell | 352.7 | OAK |
| +003+ | 10.35 | Joe McGinnity | 376.3 | SFN |
| +004+ | 10.23 | Frank Owen | 315 | CHA |
| +005+ | 9.93 | Eddie Plank | 326 | OAK |
| +006+ | 8.6 | Cy Young | 321 | BOS |
| +007+ | 8.29 | Jesse Tannehill | 272.7 | BOS |
| +009+ | 6.75 | Harry Howell | 264.7 | BAL |
| +010+ | 6.25 | Bill Bernhard | 276 | CLE |
| +011+ | 6.14 | Bill Dinneen | 274.7 | BOS |
| +014+ | 6.03 | Addie Joss | 159.3 | CLE |
| +015+ | 5.98 | George Mullin | 335 | DET |
| +016+ | 5.87 | Doc White | 178 | CHA |
| +017+ | 5.52 | Jack Powell | 331.7 | NYA |
| +018+ | 5.4 | Earl Moore | 224.3 | CLE |
| +020+ | 5.31 | Fred Glade | 259.7 | BAL |
| +021+ | 5.18 | Ed Killian | 309.7 | DET |
| +024+ | 4.92 | Norwood Gibson | 231 | BOS |
| +025+ | 4.9 | Red Donahue | 245 | CLE |
| +027+ | 4.71 | Jake Weimer | 263.7 | CHN |
| +029+ | 4.57 | Weldon Henley | 255.7 | OAK |
| +032+ | 4.32 | Frank Smith | 174.3 | CHA |
| +034+ | 4.1 | Kid Nichols | 283 | SLN |
| +041+ | 3.65 | Patsy Flaherty | 255 | TOT |
| +042+ | 3.6 | Otto Hess | 114.3 | CLE |
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