| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.68 | 190407300_DET_OAK |
| Cy Young | BOS | 4.38 | 190408010_BOS_CLE |
| Jack Chesbro | NYA | 3.42 | 190407301_BAL_NYA |
| Ed Killian | DET | 1.19 | 190407300_DET_OAK |
| Jack Taylor | SLN | 1.08 | 190407301_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Oscar Jones | LAN | -2.26 | 190407300_ATL_LAN |
| Vic Willis | ATL | -2.24 | 190407300_ATL_LAN |
| Happy Townsend | MIN | -1.76 | 190408010_MIN_CHA |
| Jack Sutthoff | PHI | -1.5 | 190407300_PHI_SFN |
| Roscoe Miller | PIT | -0.61 | 190407301_SLN_PIT |
Based on accumulated WAA for this season up to 1904-08-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.47 | Rube Waddell | 234.3 | OAK |
| +002+ | 8.97 | Jack Chesbro | 254 | NYA |
| +003+ | 8.74 | Joe McGinnity | 257.3 | SFN |
| +004+ | 7.74 | Cy Young | 222.3 | BOS |
| +005+ | 7.21 | Frank Owen | 215 | CHA |
| +006+ | 7.14 | Eddie Plank | 225 | OAK |
| +008+ | 5.73 | Patsy Flaherty | 177 | TOT |
| +010+ | 5.44 | Ed Killian | 213.3 | DET |
| +011+ | 4.41 | Norwood Gibson | 152 | BOS |
| +012+ | 4.39 | Harry Howell | 171 | BAL |
| +013+ | 4.35 | Earl Moore | 169.3 | CLE |
| +015+ | 4.33 | Jesse Tannehill | 166.7 | BOS |
| +016+ | 4.09 | Frank Smith | 96.7 | CHA |
| +019+ | 3.98 | Fred Glade | 155 | BAL |
| +021+ | 3.92 | Bill Bernhard | 192 | CLE |
| +022+ | 3.76 | Red Donahue | 152 | CLE |
| +024+ | 3.67 | Bill Dinneen | 163.7 | BOS |
| +027+ | 3.28 | Jack Taylor | 209 | SLN |
| +032+ | 2.89 | George Mullin | 224 | DET |
| +033+ | 2.88 | Ed Siever | 146.3 | BAL |
| +035+ | 2.62 | Nick Altrock | 187 | CHA |
| +038+ | 2.53 | Weldon Henley | 158.7 | OAK |
| +042+ | 2.43 | Addie Joss | 82.7 | CLE |
| +043+ | 2.4 | Doc White | 112 | CHA |
| +044+ | 2.35 | Barney Pelty | 150.3 | BAL |
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