| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe McGinnity | SFN | 9.85 | 190407020_ATL_SFN |
| Rube Waddell | OAK | 8.48 | 190407042_NYA_OAK |
| Cy Young | BOS | 5.45 | 190407042_BOS_MIN |
| Jack Chesbro | NYA | 2.71 | 190407041_NYA_OAK |
| Red Donahue | CLE | 1.92 | 190407022_CLE_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| John McPherson | PHI | -2.67 | 190407022_LAN_PHI |
| Jack Harper | CIN | -2.07 | 190407020_CIN_PIT |
| Vic Willis | ATL | -1.75 | 190407020_ATL_SFN |
| Jesse Stovall | DET | -1.12 | 190407021_CLE_DET |
| Buttons Briggs | CHN | -0.97 | 190407042_CHN_PIT |
Based on accumulated WAA for this season up to 1904-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.69 | Joe McGinnity | 201 | SFN |
| +002+ | 7.8 | Rube Waddell | 178.3 | OAK |
| +003+ | 6.88 | Jack Chesbro | 191 | NYA |
| +004+ | 5.84 | Frank Owen | 162.7 | CHA |
| +005+ | 5.83 | Red Donahue | 116.7 | CLE |
| +006+ | 5.51 | Cy Young | 154 | BOS |
| +007+ | 4.46 | Eddie Plank | 161 | OAK |
| +008+ | 4.31 | Jesse Tannehill | 131.7 | BOS |
| +010+ | 4.05 | Harry Howell | 124.7 | BAL |
| +011+ | 4.01 | George Mullin | 184 | DET |
| +016+ | 3.42 | Ed Killian | 165 | DET |
| +017+ | 3.37 | Bill Bernhard | 132 | CLE |
| +018+ | 3.32 | Patsy Flaherty | 105 | TOT |
| +021+ | 3.18 | Bill Dinneen | 130.7 | BOS |
| +025+ | 2.58 | Jack Powell | 147 | NYA |
| +027+ | 2.43 | Weldon Henley | 126.7 | OAK |
| +028+ | 2.4 | Jack Taylor | 147 | SLN |
| +029+ | 2.38 | Norwood Gibson | 98 | BOS |
| +030+ | 2.29 | Jake Weimer | 130.7 | CHN |
| +031+ | 2.27 | Nick Altrock | 147.3 | CHA |
| +038+ | 1.97 | Earl Moore | 113.3 | CLE |
| +039+ | 1.93 | Ed Siever | 119 | BAL |
| +041+ | 1.91 | Barney Pelty | 113.3 | BAL |
| +040+ | 1.91 | George Winter | 51.3 | BOS |
| +045+ | 1.78 | Fred Glade | 111.7 | BAL |
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