| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 9.66 | 192105240_NYA_BAL |
| Jesse Barnes | SFN | 5.82 | 192105220_PIT_SFN |
| Babe Adams | PIT | 5.02 | 192105240_PIT_SFN |
| Stan Coveleski | CLE | 4.57 | 192105220_BOS_CLE |
| Dutch Ruether | LAN | 3.53 | 192105220_CHN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dutch Leonard | DET | -2.52 | 192105230_OAK_DET |
| Slim Harriss | OAK | -1.28 | 192105230_OAK_DET |
| Harry Courtney | MIN | -1.2 | 192105220_MIN_CHA |
| Bernie Boland | BAL | -0.75 | 192105240_NYA_BAL |
| Mule Watson | ATL | -0.64 | 192105240_SLN_ATL |
Based on accumulated WAA for this season up to 1921-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.07 | Red Faber | 82.7 | CHA |
| +002+ | 4.46 | Carl Mays | 86 | NYA |
| +004+ | 3.45 | Stan Coveleski | 85 | CLE |
| +009+ | 2.82 | Jesse Barnes | 62.7 | SFN |
| +011+ | 2.5 | Whitey Glazner | 55.7 | PIT |
| +014+ | 2.34 | George Mogridge | 49 | MIN |
| +015+ | 2.09 | Sad Sam Jones | 75 | BOS |
| +016+ | 2.05 | Eppa Rixey | 61.7 | CIN |
| +018+ | 2 | Wilbur Cooper | 64 | PIT |
| +019+ | 1.97 | Rube Benton | 26 | SFN |
| +020+ | 1.9 | Burleigh Grimes | 51 | LAN |
| +027+ | 1.44 | Dana Fillingim | 46 | ATL |
| +029+ | 1.42 | Earl Hamilton | 62.3 | PIT |
| +033+ | 1.35 | Waite Hoyt | 58.7 | NYA |
| XXXXX | 1.24 | Herb Pennock | 48.3 | BOS |
| XXXXX | 1.05 | Hugh McQuillan | 58 | ATL |
| XXXXX | 1.03 | Bill Pertica | 55 | SLN |
| XXXXX | 1.01 | Lefty Tyler | 20 | CHN |
| XXXXX | 0.93 | Jim Bagby | 75.7 | CLE |
| XXXXX | 0.84 | Fred Toney | 61.7 | SFN |
| XXXXX | 0.83 | Dutch Ruether | 60 | LAN |
| XXXXX | 0.77 | Red Oldham | 48 | DET |
| XXXXX | 0.69 | Rosy Ryan | 32.7 | SFN |
| XXXXX | 0.68 | Dave Keefe | 42.7 | OAK |
| XXXXX | 0.63 | Dolf Luque | 73.3 | CIN |
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