| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 13.27 | 190405302_OAK_NYA |
| Joe McGinnity | SFN | 10.5 | 190405310_SFN_PHI |
| Sam Leever | PIT | 2.63 | 190405290_PIT_CHN |
| Jesse Tannehill | BOS | 1.04 | 190405302_MIN_BOS |
| George Mullin | DET | 0.64 | 190405310_BAL_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Lush | PHI | -3.62 | 190405301_SFN_PHI |
| Jack Harper | CIN | -1.84 | 190405301_CHN_CIN |
| Ed Poole | LAN | -1.46 | 190405290_SFN_LAN |
| Davey Dunkle | MIN | -0.58 | 190405302_MIN_BOS |
| Kaiser Wilhelm | ATL | -0.28 | 190405310_ATL_LAN |
Based on accumulated WAA for this season up to 1904-05-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.41 | Rube Waddell | 112 | OAK |
| +002+ | 5.78 | Joe McGinnity | 115 | SFN |
| +003+ | 4.04 | Jesse Tannehill | 78.7 | BOS |
| +004+ | 3.98 | Red Donahue | 71 | CLE |
| +005+ | 3.97 | Cy Young | 83 | BOS |
| +006+ | 3.66 | Jack Chesbro | 110 | NYA |
| +007+ | 3.27 | Bill Dinneen | 77 | BOS |
| +011+ | 2.73 | Frank Owen | 80 | CHA |
| +013+ | 2.47 | Norwood Gibson | 54 | BOS |
| +017+ | 2.29 | Ed Killian | 96.3 | DET |
| +019+ | 2.19 | Eddie Plank | 96 | OAK |
| +023+ | 1.68 | Jake Weimer | 78.3 | CHN |
| +026+ | 1.43 | Harry Howell | 63.7 | BAL |
| +032+ | 1.39 | Fred Glade | 54.7 | BAL |
| +031+ | 1.39 | Weldon Henley | 83.3 | OAK |
| +034+ | 1.34 | Bill Bernhard | 77 | CLE |
| +036+ | 1.31 | Ed Siever | 76 | BAL |
| XXXXX | 1.2 | Casey Patten | 86.7 | MIN |
| XXXXX | 1.15 | Nick Altrock | 71 | CHA |
| XXXXX | 1.04 | George Mullin | 111 | DET |
| XXXXX | 1.03 | Chappie McFarland | 61 | SLN |
| XXXXX | 0.91 | Jack Cronin | 98.7 | LAN |
| XXXXX | 0.9 | Barney Pelty | 59.3 | BAL |
| XXXXX | 0.83 | Earl Moore | 44 | CLE |
| XXXXX | 0.75 | Claude Elliott | 43 | CIN |
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