| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 7.1 | 192108210_CIN_LAN |
| Carl Mays | NYA | 4.77 | 192108220_NYA_BAL |
| Bill Doak | SLN | 2.79 | 192108200_SLN_SFN |
| Sad Sam Jones | BOS | 2.51 | 192108220_BOS_CLE |
| Burleigh Grimes | LAN | 2.2 | 192108200_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Wilkinson | CHA | -3.67 | 192108210_MIN_CHA |
| Dixie Davis | BAL | -1.91 | 192108200_NYA_BAL |
| Howard Ehmke | DET | -0.85 | 192108210_OAK_DET |
| Rollie Naylor | OAK | -0.81 | 192108220_OAK_DET |
| Speed Martin | CHN | -0.67 | 192108200_CHN_PHI |
Based on accumulated WAA for this season up to 1921-08-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.85 | Red Faber | 277.3 | CHA |
| +004+ | 8.78 | Eppa Rixey | 234 | CIN |
| +008+ | 6.63 | George Mogridge | 223.7 | MIN |
| +009+ | 6.39 | Carl Mays | 255.3 | NYA |
| +011+ | 5.84 | Bill Doak | 163.7 | SLN |
| +012+ | 5.83 | Jesse Barnes | 200.3 | SFN |
| +016+ | 5.58 | Sad Sam Jones | 234 | BOS |
| +019+ | 4.64 | Whitey Glazner | 182 | PIT |
| +021+ | 4.35 | Burleigh Grimes | 217.3 | LAN |
| +024+ | 4.08 | Stan Coveleski | 251 | CLE |
| +026+ | 3.61 | Allen Russell | 141 | BOS |
| +028+ | 3.42 | Wilbur Cooper | 256 | PIT |
| +032+ | 3.23 | Waite Hoyt | 204.3 | NYA |
| +033+ | 3.01 | Joe Oeschger | 226.3 | ATL |
| +034+ | 2.96 | Hugh McQuillan | 212.3 | ATL |
| +040+ | 2.76 | Bill Pertica | 164.3 | SLN |
| +039+ | 2.76 | Dolf Luque | 237 | CIN |
| +046+ | 2.39 | Dutch Leonard | 197.3 | DET |
| +047+ | 2.28 | Eric Erickson | 140.3 | MIN |
| +049+ | 2.23 | Johnny Morrison | 75 | PIT |
| +055+ | 2.09 | Earl Hamilton | 184 | PIT |
| +056+ | 2.04 | Dana Fillingim | 175.3 | ATL |
| +058+ | 1.95 | Clarence Mitchell | 128.7 | LAN |
| +064+ | 1.79 | Pete Alexander | 179.3 | CHN |
| +065+ | 1.76 | Guy Morton | 72.3 | CLE |
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