| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 6.94 | 192109190_ATL_CIN |
| Carl Mays | NYA | 5.77 | 192109190_DET_NYA |
| Burleigh Grimes | LAN | 4.79 | 192109181_LAN_CHN |
| Jesse Barnes | SFN | 3.1 | 192109200_SFN_CHN |
| Stan Coveleski | CLE | 1.82 | 192109180_CLE_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dickey Kerr | CHA | -2.52 | 192109200_CHA_MIN |
| Harvey Freeman | OAK | -1.66 | 192109190_BAL_OAK |
| Virgil Cheeves | CHN | -1.43 | 192109181_LAN_CHN |
| Tom Zachary | MIN | -1 | 192109200_CHA_MIN |
| Bill Hubbell | PHI | -0.98 | 192109190_PHI_SLN |
Based on accumulated WAA for this season up to 1921-09-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +009+ | 8.38 | Eppa Rixey | 284.7 | CIN |
| +010+ | 8.2 | Burleigh Grimes | 277.3 | LAN |
| +011+ | 7.84 | Carl Mays | 316.7 | NYA |
| +014+ | 6.56 | Bill Doak | 193 | SLN |
| +017+ | 6.16 | George Mogridge | 270.7 | MIN |
| +018+ | 6.1 | Sad Sam Jones | 283.7 | BOS |
| +019+ | 5.86 | Waite Hoyt | 262.7 | NYA |
| +020+ | 5.84 | Jesse Barnes | 254 | SFN |
| +023+ | 5.21 | Stan Coveleski | 296 | CLE |
| +026+ | 4.53 | Babe Adams | 153 | PIT |
| +025+ | 4.53 | Dolf Luque | 295 | CIN |
| +027+ | 4.52 | Wilbur Cooper | 300 | PIT |
| +036+ | 3.96 | Bill Pertica | 201 | SLN |
| +037+ | 3.85 | Bullet Joe Bush | 229.3 | BOS |
| +039+ | 3.73 | Rube Marquard | 255.7 | CIN |
| +041+ | 3.63 | Pete Alexander | 234.3 | CHN |
| +043+ | 3.41 | Dana Fillingim | 227.3 | ATL |
| +044+ | 3.32 | Clarence Mitchell | 165 | LAN |
| +045+ | 3.26 | Johnny Morrison | 123 | PIT |
| +046+ | 3.14 | Joe Oeschger | 287.3 | ATL |
| +047+ | 3.1 | Jesse Haines | 227.3 | SLN |
| +048+ | 3.04 | Fred Toney | 244.3 | SFN |
| +050+ | 2.79 | Benn Karr | 97.3 | BOS |
| +051+ | 2.69 | Walter Johnson | 238 | MIN |
| +054+ | 2.52 | Bill Sherdel | 128.3 | SLN |
_