| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe McGinnity | SFN | 4.66 | 190408121_CIN_SFN |
| Cy Young | BOS | 3.22 | 190408130_BOS_BAL |
| Jack Chesbro | NYA | 3.06 | 190408130_NYA_CHA |
| Frank Owen | CHA | 2.97 | 190408120_NYA_CHA |
| Eddie Plank | OAK | 2.56 | 190408130_OAK_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -6.55 | 190408120_CHN_PHI |
| Kaiser Wilhelm | ATL | -3.48 | 190408130_PIT_ATL |
| Buttons Briggs | CHN | -0.49 | 190408132_CHN_PHI |
| Jack Harper | CIN | -0.38 | 190408130_CIN_SFN |
| Chappie McFarland | SLN | -0.35 | 190408130_SLN_LAN |
Based on accumulated WAA for this season up to 1904-08-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.27 | Rube Waddell | 265.3 | OAK |
| +002+ | 8.96 | Joe McGinnity | 283.3 | SFN |
| +003+ | 8.75 | Jack Chesbro | 283 | NYA |
| +004+ | 8.56 | Frank Owen | 251 | CHA |
| +005+ | 7.35 | Cy Young | 246.3 | BOS |
| +006+ | 7.15 | Eddie Plank | 246 | OAK |
| +008+ | 6.22 | Ed Killian | 240.3 | DET |
| +010+ | 5.15 | Patsy Flaherty | 194 | TOT |
| +011+ | 5.15 | Jesse Tannehill | 202.7 | BOS |
| +012+ | 4.98 | Red Donahue | 179 | CLE |
| +013+ | 4.96 | Bill Dinneen | 189.7 | BOS |
| +015+ | 4.76 | Frank Smith | 115.7 | CHA |
| +016+ | 4.59 | Earl Moore | 192.3 | CLE |
| +017+ | 4.53 | Harry Howell | 189 | BAL |
| +018+ | 4.41 | George Mullin | 261 | DET |
| +021+ | 4.25 | Bill Bernhard | 209 | CLE |
| +023+ | 4.06 | Jack Powell | 247.7 | NYA |
| +024+ | 3.99 | Fred Glade | 182 | BAL |
| +029+ | 3.47 | Kid Nichols | 193 | SLN |
| +031+ | 3.32 | Nick Altrock | 214 | CHA |
| +034+ | 3.1 | Bill Donovan | 207 | DET |
| +037+ | 3.06 | Doc White | 126 | CHA |
| +038+ | 3.05 | Weldon Henley | 176.7 | OAK |
| +041+ | 2.81 | Jake Weimer | 193.7 | CHN |
| +043+ | 2.69 | Addie Joss | 103.7 | CLE |
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