| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe McGinnity | SFN | 4.88 | 190408041_CHN_SFN |
| Cy Young | BOS | 3.87 | 190408050_BOS_DET |
| Jack Chesbro | NYA | 3.57 | 190408060_NYA_CLE |
| Eddie Plank | OAK | 2.85 | 190408050_OAK_CHA |
| Frank Owen | CHA | 2.66 | 190408050_OAK_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Fisher | ATL | -7.47 | 190408060_CIN_ATL |
| Bill Duggleby | PHI | -7.24 | 190408050_CIN_PHI |
| Oscar Jones | LAN | -2.38 | 190408060_CHN_LAN |
| Happy Townsend | MIN | -1.84 | 190408050_MIN_BAL |
| Jesse Stovall | DET | -1.34 | 190408060_BOS_DET |
Based on accumulated WAA for this season up to 1904-08-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.46 | Rube Waddell | 243.3 | OAK |
| +002+ | 9.21 | Jack Chesbro | 272 | NYA |
| +003+ | 8.7 | Joe McGinnity | 266.3 | SFN |
| +004+ | 8.31 | Frank Owen | 233 | CHA |
| +005+ | 7.47 | Cy Young | 230.3 | BOS |
| +006+ | 7.13 | Eddie Plank | 234 | OAK |
| +009+ | 5.21 | Ed Killian | 222.3 | DET |
| +010+ | 5.09 | Jesse Tannehill | 184.7 | BOS |
| +011+ | 5.03 | Patsy Flaherty | 185 | TOT |
| +012+ | 4.77 | Earl Moore | 183.3 | CLE |
| +013+ | 4.62 | Frank Smith | 106.7 | CHA |
| +015+ | 4.32 | Harry Howell | 171 | BAL |
| +017+ | 4.19 | Red Donahue | 161 | CLE |
| +018+ | 4.13 | Bill Dinneen | 172.7 | BOS |
| +021+ | 3.99 | Fred Glade | 164 | BAL |
| +023+ | 3.83 | George Mullin | 243 | DET |
| +024+ | 3.69 | Jack Powell | 226.7 | NYA |
| +027+ | 3.5 | Bill Bernhard | 196 | CLE |
| +029+ | 3.22 | Norwood Gibson | 156 | BOS |
| +033+ | 3.13 | Jack Taylor | 218.3 | SLN |
| +035+ | 3.02 | Nick Altrock | 196 | CHA |
| +036+ | 2.99 | Kid Nichols | 176 | SLN |
| +042+ | 2.56 | Weldon Henley | 167.7 | OAK |
| +043+ | 2.52 | Addie Joss | 94.7 | CLE |
| +044+ | 2.47 | Ed Siever | 155.3 | BAL |
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