| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jesse Barnes | SFN | 5.82 | 192105220_PIT_SFN |
| Wilbur Cooper | PIT | 4.88 | 192105220_PIT_SFN |
| Stan Coveleski | CLE | 4.57 | 192105220_BOS_CLE |
| Dutch Ruether | LAN | 3.53 | 192105220_CHN_LAN |
| Red Faber | CHA | 2.96 | 192105220_MIN_CHA |
| 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 |
| Stan Baumgartner | PHI | -0.73 | 192105210_SLN_PHI |
| George Uhle | CLE | -0.46 | 192105210_OAK_CLE |
Based on accumulated WAA for this season up to 1921-05-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.13 | Red Faber | 82.7 | CHA |
| +002+ | 4.55 | Carl Mays | 84.3 | NYA |
| +003+ | 3.5 | Stan Coveleski | 85 | CLE |
| +008+ | 2.86 | Jesse Barnes | 62.7 | SFN |
| +011+ | 2.52 | Whitey Glazner | 55.7 | PIT |
| +013+ | 2.36 | George Mogridge | 49 | MIN |
| +015+ | 2.14 | Sad Sam Jones | 75 | BOS |
| +016+ | 2.08 | Eppa Rixey | 61.7 | CIN |
| +017+ | 2.01 | Wilbur Cooper | 64 | PIT |
| +018+ | 1.99 | Rube Benton | 26 | SFN |
| +019+ | 1.93 | Burleigh Grimes | 51 | LAN |
| +027+ | 1.46 | Dana Fillingim | 46 | ATL |
| +028+ | 1.44 | Earl Hamilton | 62.3 | PIT |
| +032+ | 1.36 | Waite Hoyt | 58.7 | NYA |
| +035+ | 1.27 | Herb Pennock | 48.3 | BOS |
| XXXXX | 1.09 | Hugh McQuillan | 58 | ATL |
| XXXXX | 1.08 | Bill Pertica | 53 | SLN |
| XXXXX | 1.01 | Lefty Tyler | 20 | CHN |
| XXXXX | 0.97 | Jim Bagby | 75.7 | CLE |
| XXXXX | 0.95 | Babe Adams | 45.3 | PIT |
| XXXXX | 0.88 | Fred Toney | 61.7 | SFN |
| XXXXX | 0.87 | Dutch Ruether | 60 | LAN |
| XXXXX | 0.86 | Red Oldham | 46.3 | DET |
| XXXXX | 0.71 | Rosy Ryan | 32.7 | SFN |
| XXXXX | 0.65 | Roy Moore | 46.7 | OAK |
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