| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Faber | CHA | 11.15 | 192108230_OAK_CHA |
| Eppa Rixey | CIN | 6.73 | 192108241_CIN_PHI |
| Bill Doak | SLN | 3.66 | 192108241_SLN_ATL |
| George Mogridge | MIN | 3.39 | 192108250_MIN_DET |
| Jesse Barnes | SFN | 3.11 | 192108230_SLN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dixie Davis | BAL | -2.8 | 192108230_BOS_BAL |
| Dickey Kerr | CHA | -2.51 | 192108240_OAK_CHA |
| Ray Caldwell | CLE | -2.32 | 192108230_NYA_CLE |
| Bob Hasty | OAK | -1.75 | 192108240_OAK_CHA |
| Phil Douglas | SFN | -1.34 | 192108242_PIT_SFN |
Based on accumulated WAA for this season up to 1921-08-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.65 | Red Faber | 287.3 | CHA |
| +004+ | 8.21 | Eppa Rixey | 239.3 | CIN |
| +008+ | 7.26 | George Mogridge | 232.7 | MIN |
| +011+ | 6.37 | Carl Mays | 255.3 | NYA |
| +012+ | 6.24 | Bill Doak | 172.7 | SLN |
| +015+ | 5.61 | Jesse Barnes | 207.3 | SFN |
| +016+ | 5.55 | Sad Sam Jones | 234 | BOS |
| +020+ | 4.93 | Burleigh Grimes | 226.3 | LAN |
| +021+ | 4.47 | Stan Coveleski | 260 | CLE |
| +025+ | 3.65 | Waite Hoyt | 213.3 | NYA |
| +030+ | 3.38 | Whitey Glazner | 186 | PIT |
| +032+ | 3.16 | Allen Russell | 143 | BOS |
| +033+ | 3.03 | Babe Adams | 136.3 | PIT |
| +034+ | 3.03 | Hugh McQuillan | 213.3 | ATL |
| +038+ | 2.79 | Joe Oeschger | 233.3 | ATL |
| +039+ | 2.77 | Wilbur Cooper | 262 | PIT |
| +040+ | 2.73 | Dolf Luque | 237 | CIN |
| +041+ | 2.73 | Bill Pertica | 164.3 | SLN |
| +044+ | 2.64 | Pete Alexander | 188.3 | CHN |
| +046+ | 2.46 | Dana Fillingim | 182.3 | ATL |
| +050+ | 2.28 | Eric Erickson | 140.3 | MIN |
| +053+ | 2.14 | Earl Hamilton | 184 | PIT |
| +054+ | 2.14 | Rube Marquard | 206.7 | CIN |
| +058+ | 2 | Fred Toney | 204.7 | SFN |
| +060+ | 1.94 | Guy Morton | 74.3 | CLE |
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