| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 9.31 | 192108190_CIN_SFN |
| Jesse Barnes | SFN | 2.99 | 192108190_CIN_SFN |
| Bill Doak | SLN | 2.79 | 192108200_SLN_SFN |
| Burleigh Grimes | LAN | 2.2 | 192108200_CIN_LAN |
| George Mogridge | MIN | 2.04 | 192108210_MIN_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shovel Hodge | CHA | -7.83 | 192108190_NYA_CHA |
| Dixie Davis | BAL | -1.91 | 192108200_NYA_BAL |
| Howard Ehmke | DET | -0.85 | 192108210_OAK_DET |
| Speed Martin | CHN | -0.67 | 192108200_CHN_PHI |
| Bill Hubbell | PHI | -0.66 | 192108192_PIT_PHI |
Based on accumulated WAA for this season up to 1921-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.82 | Red Faber | 277.3 | CHA |
| +003+ | 8.75 | Eppa Rixey | 234 | CIN |
| +008+ | 6.58 | George Mogridge | 223.7 | MIN |
| +011+ | 5.93 | Carl Mays | 246.3 | NYA |
| +013+ | 5.82 | Bill Doak | 163.7 | SLN |
| +014+ | 5.8 | Jesse Barnes | 200.3 | SFN |
| +015+ | 5.74 | Sad Sam Jones | 225 | BOS |
| +019+ | 4.62 | Whitey Glazner | 182 | PIT |
| +022+ | 4.32 | Burleigh Grimes | 217.3 | LAN |
| +023+ | 4.05 | Stan Coveleski | 251 | CLE |
| +026+ | 3.6 | Allen Russell | 141 | BOS |
| +027+ | 3.59 | Hugh McQuillan | 210.3 | ATL |
| +030+ | 3.38 | Wilbur Cooper | 256 | PIT |
| +032+ | 3.21 | Waite Hoyt | 204.3 | NYA |
| +034+ | 2.98 | Joe Oeschger | 226.3 | ATL |
| +036+ | 2.93 | Dolf Luque | 228 | CIN |
| +041+ | 2.57 | Earl Hamilton | 178 | PIT |
| +045+ | 2.36 | Dutch Leonard | 197.3 | DET |
| +047+ | 2.25 | Eric Erickson | 140.3 | MIN |
| +050+ | 2.21 | Johnny Morrison | 75 | PIT |
| +051+ | 2.2 | Guy Morton | 70.3 | CLE |
| +057+ | 2.02 | Dana Fillingim | 175.3 | ATL |
| +060+ | 1.93 | Clarence Mitchell | 128.7 | LAN |
| +062+ | 1.89 | Bill Pertica | 155.3 | SLN |
| +063+ | 1.8 | Pete Alexander | 179.3 | CHN |
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