| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 7.86 | 192105100_NYA_DET |
| Jesse Barnes | SFN | 5.08 | 192105080_SFN_LAN |
| Babe Adams | PIT | 4.7 | 192105080_PIT_CIN |
| Pete Alexander | CHN | 3.84 | 192105100_CHN_PHI |
| Dutch Ruether | LAN | 3.36 | 192105100_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Causey | PHI | -1.93 | 192105092_LAN_PHI |
| Dutch Leonard | DET | -1.32 | 192105080_DET_BAL |
| George Uhle | CLE | -1.29 | 192105080_CHA_CLE |
| Bullet Joe Bush | BOS | -1.25 | 192105100_BOS_CHA |
| Eppa Rixey | CIN | -0.68 | 192105080_PIT_CIN |
Based on accumulated WAA for this season up to 1921-05-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.87 | Carl Mays | 64.3 | NYA |
| +002+ | 3.29 | Red Faber | 53 | CHA |
| +005+ | 2.33 | Bill Piercy | 44 | NYA |
| +006+ | 2.26 | Sad Sam Jones | 50 | BOS |
| +008+ | 2.1 | Jesse Barnes | 40 | SFN |
| +009+ | 1.92 | Wilbur Cooper | 36 | PIT |
| +011+ | 1.88 | Stan Coveleski | 55 | CLE |
| +013+ | 1.78 | Burleigh Grimes | 27 | LAN |
| +014+ | 1.75 | Whitey Glazner | 31.7 | PIT |
| +015+ | 1.65 | Fred Toney | 42 | SFN |
| +017+ | 1.58 | Eppa Rixey | 47.3 | CIN |
| +024+ | 1.32 | Dolf Luque | 56 | CIN |
| XXXXX | 1.24 | Clarence Mitchell | 32.7 | LAN |
| XXXXX | 1.11 | Babe Adams | 36.3 | PIT |
| XXXXX | 0.99 | Jim Middleton | 30.3 | DET |
| XXXXX | 0.94 | Herb Pennock | 28.7 | BOS |
| XXXXX | 0.91 | Red Causey | 27 | PHI |
| XXXXX | 0.74 | Hugh McQuillan | 43 | ATL |
| XXXXX | 0.66 | Dutch Ruether | 42.7 | LAN |
| XXXXX | 0.63 | George Mogridge | 25 | MIN |
| XXXXX | 0.59 | Rube Benton | 9 | SFN |
| XXXXX | 0.55 | Sherry Smith | 32 | LAN |
| XXXXX | 0.53 | Red Oldham | 32.3 | DET |
| XXXXX | 0.53 | Jimmy Ring | 39.3 | PHI |
| XXXXX | 0.44 | Rosy Ryan | 21.3 | SFN |
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