| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 10.93 | 190405140_CHA_OAK |
| Joe McGinnity | SFN | 8.84 | 190405140_SFN_CIN |
| Sam Leever | PIT | 2.57 | 190405160_SFN_PIT |
| Ed Siever | BAL | 2.35 | 190405160_BAL_OAK |
| Ed Killian | DET | 0.3 | 190405160_DET_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tully Sparks | PHI | -1.74 | 190405140_PHI_CHN |
| Joe Corbett | SLN | -0.78 | 190405140_ATL_SLN |
| Jack Sutthoff | CIN | -0.73 | 190405150_SFN_CIN |
| Cy Ferry | DET | -0.48 | 190405140_DET_BOS |
| Buttons Briggs | CHN | -0.33 | 190405150_PHI_CHN |
Based on accumulated WAA for this season up to 1904-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.23 | Rube Waddell | 77 | OAK |
| +002+ | 3.82 | Joe McGinnity | 69 | SFN |
| +003+ | 3.34 | Cy Young | 56 | BOS |
| +004+ | 3.12 | Red Donahue | 44 | CLE |
| +005+ | 2.63 | Jesse Tannehill | 47.7 | BOS |
| +006+ | 2.61 | Norwood Gibson | 45 | BOS |
| +007+ | 2.54 | Frank Owen | 62 | CHA |
| +010+ | 2.11 | Ed Killian | 73.3 | DET |
| +012+ | 1.99 | Bill Dinneen | 50 | BOS |
| +016+ | 1.82 | Weldon Henley | 63 | OAK |
| +018+ | 1.75 | Jack Powell | 56.7 | NYA |
| +020+ | 1.6 | Bill Bernhard | 62 | CLE |
| +021+ | 1.56 | Patsy Flaherty | 43 | CHA |
| +026+ | 1.31 | Jack Chesbro | 71 | NYA |
| XXXXX | 1.15 | Fred Glade | 28.7 | BAL |
| XXXXX | 1.15 | Eddie Plank | 60 | OAK |
| XXXXX | 1.03 | Kaiser Wilhelm | 53 | ATL |
| XXXXX | 0.97 | Chappie McFarland | 44 | SLN |
| XXXXX | 0.93 | Casey Patten | 67.7 | MIN |
| XXXXX | 0.83 | Jack Cronin | 63 | LAN |
| XXXXX | 0.73 | Harry Howell | 31.3 | BAL |
| XXXXX | 0.72 | Barney Pelty | 36.7 | BAL |
| XXXXX | 0.65 | Chick Fraser | 43 | PHI |
| XXXXX | 0.55 | Jake Weimer | 49.3 | CHN |
| XXXXX | 0.53 | Chief Bender | 9 | OAK |
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