| 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 |
| Wilbur Cooper | PIT | 4.93 | 192105050_SLN_PIT |
| 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 |
| Hooks Dauss | DET | -1.06 | 192105070_DET_BAL |
| Speed Martin | CHN | -0.77 | 192105070_CIN_CHN |
| Hugh McQuillan | ATL | -0.64 | 192105070_PHI_ATL |
Based on accumulated WAA for this season up to 1921-05-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.36 | Carl Mays | 55.3 | NYA |
| +003+ | 2.6 | Red Faber | 44 | CHA |
| +005+ | 2.01 | Bill Piercy | 35 | NYA |
| +006+ | 1.99 | Sad Sam Jones | 41 | BOS |
| +007+ | 1.79 | Stan Coveleski | 55 | CLE |
| +008+ | 1.73 | Dolf Luque | 50 | CIN |
| +009+ | 1.71 | Jesse Barnes | 34 | SFN |
| +010+ | 1.69 | Whitey Glazner | 31.7 | PIT |
| +012+ | 1.56 | Fred Toney | 42 | SFN |
| +013+ | 1.49 | Wilbur Cooper | 27 | PIT |
| +016+ | 1.37 | Lefty York | 18 | CHN |
| XXXXX | 1.17 | Burleigh Grimes | 18 | LAN |
| XXXXX | 1.07 | Jim Bagby | 46.7 | CLE |
| XXXXX | 1.01 | Bill Pertica | 32.3 | SLN |
| XXXXX | 0.89 | Herb Pennock | 28.7 | BOS |
| XXXXX | 0.69 | Eppa Rixey | 38.3 | CIN |
| XXXXX | 0.67 | Hugh McQuillan | 43 | ATL |
| XXXXX | 0.57 | Rube Benton | 9 | SFN |
| XXXXX | 0.53 | Babe Adams | 28 | PIT |
| XXXXX | 0.52 | Sherry Smith | 32 | LAN |
| XXXXX | 0.49 | Jimmy Ring | 39.3 | PHI |
| XXXXX | 0.47 | Red Oldham | 25.3 | DET |
| XXXXX | 0.46 | Jeff Pfeffer | 14.7 | LAN |
| XXXXX | 0.45 | Slim Harriss | 33 | OAK |
| XXXXX | 0.43 | Red Causey | 17 | PHI |
_