| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 11.3 | 192105060_NYA_MIN |
| Fred Toney | SFN | 6.04 | 192105070_LAN_SFN |
| Hippo Vaughn | CHN | 5.57 | 192105060_CIN_CHN |
| Babe Adams | PIT | 4.7 | 192105080_PIT_CIN |
| Stan Coveleski | CLE | 4.31 | 192105060_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eric Erickson | MIN | -2.49 | 192105060_NYA_MIN |
| Bill Bayne | BAL | -1.95 | 192105070_DET_BAL |
| Dutch Leonard | DET | -1.32 | 192105080_DET_BAL |
| George Uhle | CLE | -1.29 | 192105080_CHA_CLE |
| Speed Martin | CHN | -0.77 | 192105070_CIN_CHN |
Based on accumulated WAA for this season up to 1921-05-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.3 | Carl Mays | 55.3 | NYA |
| +002+ | 2.7 | Red Faber | 44 | CHA |
| +004+ | 2.32 | Bill Piercy | 44 | NYA |
| +005+ | 2.24 | Sad Sam Jones | 50 | BOS |
| +006+ | 2.1 | Jesse Barnes | 40 | SFN |
| +009+ | 1.88 | Stan Coveleski | 55 | CLE |
| +010+ | 1.8 | Dolf Luque | 50 | CIN |
| +011+ | 1.75 | Whitey Glazner | 31.7 | PIT |
| +014+ | 1.65 | Fred Toney | 42 | SFN |
| +015+ | 1.56 | Eppa Rixey | 47.3 | CIN |
| +016+ | 1.55 | Wilbur Cooper | 27 | PIT |
| +025+ | 1.26 | Clarence Mitchell | 32.7 | LAN |
| XXXXX | 1.2 | Burleigh Grimes | 18 | LAN |
| XXXXX | 1.15 | Jim Bagby | 46.7 | CLE |
| XXXXX | 1.11 | Babe Adams | 36.3 | PIT |
| XXXXX | 1.06 | Bill Pertica | 32.3 | SLN |
| XXXXX | 0.93 | Herb Pennock | 28.7 | BOS |
| XXXXX | 0.75 | Hugh McQuillan | 43 | ATL |
| XXXXX | 0.63 | George Mogridge | 25 | MIN |
| XXXXX | 0.59 | Rube Benton | 9 | SFN |
| XXXXX | 0.57 | Sherry Smith | 32 | LAN |
| XXXXX | 0.55 | Jimmy Ring | 39.3 | PHI |
| XXXXX | 0.52 | Red Oldham | 25.3 | DET |
| XXXXX | 0.46 | Red Causey | 17 | PHI |
| XXXXX | 0.43 | Slim Harriss | 33 | OAK |
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