| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 9.66 | 192105240_NYA_BAL |
| Stan Coveleski | CLE | 5.62 | 192105260_CLE_BAL |
| Babe Adams | PIT | 5.02 | 192105240_PIT_SFN |
| Phil Douglas | SFN | 3.04 | 192105262_SFN_ATL |
| Red Faber | CHA | 2.94 | 192105261_CHA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hooks Dauss | DET | -1.91 | 192105261_CHA_DET |
| Roy Wilkinson | CHA | -1.67 | 192105250_MIN_CHA |
| Scott Perry | OAK | -1.23 | 192105250_OAK_DET |
| George Uhle | CLE | -0.88 | 192105250_BOS_CLE |
| Bernie Boland | BAL | -0.75 | 192105240_NYA_BAL |
Based on accumulated WAA for this season up to 1921-05-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.49 | Carl Mays | 86 | NYA |
| +003+ | 3.85 | Red Faber | 82.7 | CHA |
| +005+ | 3.59 | Stan Coveleski | 93 | CLE |
| +009+ | 2.84 | Jesse Barnes | 62.7 | SFN |
| +013+ | 2.52 | Whitey Glazner | 55.7 | PIT |
| +014+ | 2.33 | George Mogridge | 58 | MIN |
| +015+ | 2.14 | Rube Benton | 34.7 | SFN |
| +016+ | 2.11 | Sad Sam Jones | 75 | BOS |
| +017+ | 2.06 | Eppa Rixey | 61.7 | CIN |
| +018+ | 2.05 | Dana Fillingim | 55 | ATL |
| +020+ | 2.01 | Wilbur Cooper | 64 | PIT |
| +022+ | 1.93 | Burleigh Grimes | 51 | LAN |
| +033+ | 1.37 | Waite Hoyt | 58.7 | NYA |
| +034+ | 1.35 | Earl Hamilton | 63.7 | PIT |
| XXXXX | 1.05 | Herb Pennock | 50.7 | BOS |
| XXXXX | 1.05 | Bill Pertica | 55 | SLN |
| XXXXX | 1.01 | Lefty Tyler | 20 | CHN |
| XXXXX | 0.97 | Jim Bagby | 75.7 | CLE |
| XXXXX | 0.95 | Hugh McQuillan | 66 | ATL |
| XXXXX | 0.86 | Dutch Ruether | 60 | LAN |
| XXXXX | 0.85 | Fred Toney | 61.7 | SFN |
| XXXXX | 0.79 | Phil Douglas | 31.3 | SFN |
| XXXXX | 0.7 | Rosy Ryan | 32.7 | SFN |
| XXXXX | 0.69 | Dave Keefe | 42.7 | OAK |
| XXXXX | 0.64 | Dolf Luque | 73.3 | CIN |
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