| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 7.32 | 192109100_SLN_CIN |
| Carl Mays | NYA | 6.09 | 192109100_NYA_OAK |
| George Mogridge | MIN | 5.33 | 192109090_BOS_MIN |
| Burleigh Grimes | LAN | 3.97 | 192109100_LAN_SFN |
| Sad Sam Jones | BOS | 3.83 | 192109090_BOS_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Kolp | BAL | -1.52 | 192109110_CLE_BAL |
| Jim Bagby | CLE | -1.5 | 192109110_CLE_BAL |
| Bob Hasty | OAK | -1.25 | 192109100_NYA_OAK |
| Hooks Dauss | DET | -0.8 | 192109110_DET_CHA |
| Virgil Cheeves | CHN | -0.63 | 192109110_SLN_CHN |
Based on accumulated WAA for this season up to 1921-09-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9.73 | Eppa Rixey | 271.7 | CIN |
| +008+ | 8.18 | Carl Mays | 300.3 | NYA |
| +009+ | 7.9 | George Mogridge | 262.7 | MIN |
| +012+ | 7.05 | Burleigh Grimes | 261.3 | LAN |
| +014+ | 6.89 | Jesse Barnes | 240.3 | SFN |
| +016+ | 6.6 | Bill Doak | 184.3 | SLN |
| +017+ | 6.43 | Sad Sam Jones | 271.7 | BOS |
| +020+ | 5.45 | Waite Hoyt | 247.3 | NYA |
| +023+ | 4.81 | Stan Coveleski | 279 | CLE |
| +024+ | 4.74 | Whitey Glazner | 207.7 | PIT |
| +026+ | 4.29 | Joe Oeschger | 268.7 | ATL |
| +027+ | 4.17 | Dana Fillingim | 213.3 | ATL |
| +028+ | 4.14 | Rube Marquard | 241.7 | CIN |
| +029+ | 3.99 | Wilbur Cooper | 286.7 | PIT |
| +035+ | 3.76 | Bill Sherdel | 121.3 | SLN |
| +036+ | 3.74 | Dolf Luque | 275 | CIN |
| +042+ | 3.38 | Pete Alexander | 218.3 | CHN |
| +046+ | 2.79 | Johnny Morrison | 113 | PIT |
| +047+ | 2.76 | Bullet Joe Bush | 211.3 | BOS |
| +048+ | 2.66 | Earl Hamilton | 205.7 | PIT |
| +050+ | 2.64 | Benn Karr | 80.3 | BOS |
| +052+ | 2.49 | Clarence Mitchell | 154.3 | LAN |
| +058+ | 2.12 | Fred Toney | 234.3 | SFN |
| +060+ | 2.08 | Bill Piercy | 72.7 | NYA |
| +062+ | 2.05 | Jesse Haines | 209.3 | SLN |
_