| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe McGinnity | SFN | 8.35 | 190407050_SFN_PHI |
| Cy Young | BOS | 6.03 | 190407060_BOS_MIN |
| Jack Chesbro | NYA | 2.58 | 190407070_BOS_NYA |
| Jack Taylor | SLN | 2.28 | 190407061_CIN_SLN |
| Eddie Plank | OAK | 1.9 | 190407060_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -4.9 | 190407050_SFN_PHI |
| Jack Harper | CIN | -1.76 | 190407061_CIN_SLN |
| Vic Willis | ATL | -1.68 | 190407050_LAN_ATL |
| Oscar Jones | LAN | -1.27 | 190407050_LAN_ATL |
| Happy Townsend | MIN | -1.07 | 190407050_BOS_MIN |
Based on accumulated WAA for this season up to 1904-07-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.21 | Joe McGinnity | 209 | SFN |
| +002+ | 7.79 | Rube Waddell | 178.3 | OAK |
| +003+ | 6.93 | Jack Chesbro | 200 | NYA |
| +004+ | 6.53 | Frank Owen | 171.7 | CHA |
| +005+ | 6.21 | Cy Young | 163 | BOS |
| +006+ | 5.78 | Red Donahue | 116.7 | CLE |
| +007+ | 4.27 | Jesse Tannehill | 131.7 | BOS |
| +012+ | 4.05 | Harry Howell | 124.7 | BAL |
| +013+ | 3.97 | George Mullin | 192 | DET |
| +014+ | 3.78 | Eddie Plank | 163 | OAK |
| +015+ | 3.41 | Ed Killian | 165 | DET |
| +019+ | 3.24 | Bill Bernhard | 141 | CLE |
| +020+ | 3.2 | Patsy Flaherty | 114 | TOT |
| +021+ | 3.14 | Bill Dinneen | 130.7 | BOS |
| +022+ | 3.11 | Jack Taylor | 156 | SLN |
| +023+ | 3.09 | Norwood Gibson | 107 | BOS |
| +026+ | 2.65 | Jack Powell | 156 | NYA |
| +027+ | 2.55 | Ed Siever | 127 | BAL |
| +029+ | 2.42 | Weldon Henley | 126.7 | OAK |
| +034+ | 2.25 | Jake Weimer | 130.7 | CHN |
| +035+ | 2.22 | Nick Altrock | 147.3 | CHA |
| +036+ | 2.21 | George Winter | 60.3 | BOS |
| +042+ | 1.93 | Earl Moore | 113.3 | CLE |
| +044+ | 1.9 | Barney Pelty | 113.3 | BAL |
| +047+ | 1.83 | Kid Nichols | 131 | SLN |
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