| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Faber | CHA | 10.34 | 192108311_BAL_CHA |
| Eppa Rixey | CIN | 5.73 | 192108290_CIN_ATL |
| Carl Mays | NYA | 5.53 | 192108300_NYA_MIN |
| Bill Doak | SLN | 3.51 | 192108301_SLN_PHI |
| Joe Oeschger | ATL | 0.88 | 192108310_CIN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dixie Davis | BAL | -2.65 | 192108311_BAL_CHA |
| Dickey Kerr | CHA | -1.59 | 192108312_BAL_CHA |
| Hooks Dauss | DET | -0.76 | 192108311_CLE_DET |
| Tom Zachary | MIN | -0.54 | 192108310_NYA_MIN |
| Rip Collins | NYA | -0.46 | 192108310_NYA_MIN |
Based on accumulated WAA for this season up to 1921-08-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.25 | Red Faber | 302.7 | CHA |
| +004+ | 8.94 | Eppa Rixey | 248.3 | CIN |
| +008+ | 7.39 | George Mogridge | 239.7 | MIN |
| +009+ | 7.3 | Carl Mays | 273.3 | NYA |
| +012+ | 6.55 | Bill Doak | 177.7 | SLN |
| +014+ | 6.14 | Sad Sam Jones | 244.7 | BOS |
| +016+ | 6.08 | Jesse Barnes | 216.3 | SFN |
| +018+ | 5.4 | Burleigh Grimes | 235.3 | LAN |
| +020+ | 4.96 | Stan Coveleski | 269 | CLE |
| +024+ | 4.31 | Joe Oeschger | 251.3 | ATL |
| +025+ | 4.04 | Waite Hoyt | 221.3 | NYA |
| +026+ | 3.93 | Whitey Glazner | 195.7 | PIT |
| +029+ | 3.69 | Dana Fillingim | 197.3 | ATL |
| +028+ | 3.69 | Wilbur Cooper | 270.7 | PIT |
| +037+ | 3.07 | Bill Pertica | 172 | SLN |
| +039+ | 2.98 | Dolf Luque | 254 | CIN |
| +044+ | 2.61 | Johnny Morrison | 90 | PIT |
| +046+ | 2.56 | Pete Alexander | 195.3 | CHN |
| +047+ | 2.55 | Allen Russell | 147.7 | BOS |
| +048+ | 2.54 | Earl Hamilton | 192 | PIT |
| +050+ | 2.38 | Bill Sherdel | 96 | SLN |
| +056+ | 2.04 | Rube Marquard | 213.7 | CIN |
| +057+ | 2 | Dutch Leonard | 213.3 | DET |
| +062+ | 1.96 | Clarence Mitchell | 142.3 | LAN |
| +066+ | 1.92 | Art Nehf | 212.3 | SFN |
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