| 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 |
| George Mogridge | MIN | 3.6 | 192109170_CLE_MIN |
| Sad Sam Jones | BOS | 3.47 | 192109170_CHA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dickey Kerr | CHA | -2.3 | 192109170_CHA_BOS |
| Harvey Freeman | OAK | -1.66 | 192109190_BAL_OAK |
| Virgil Cheeves | CHN | -1.43 | 192109181_LAN_CHN |
| Bill Hubbell | PHI | -0.98 | 192109190_PHI_SLN |
| Dutch Ruether | LAN | -0.71 | 192109182_LAN_CHN |
Based on accumulated WAA for this season up to 1921-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +009+ | 8.38 | Eppa Rixey | 284.7 | CIN |
| +010+ | 8.19 | Burleigh Grimes | 277.3 | LAN |
| +011+ | 7.84 | Carl Mays | 316.7 | NYA |
| +014+ | 6.66 | Jesse Barnes | 249.3 | SFN |
| +016+ | 6.56 | Bill Doak | 193 | SLN |
| +018+ | 6.15 | George Mogridge | 270.7 | MIN |
| +019+ | 6 | Sad Sam Jones | 282.7 | BOS |
| +020+ | 5.86 | Waite Hoyt | 262.7 | NYA |
| +023+ | 5.18 | Stan Coveleski | 296 | CLE |
| +026+ | 4.53 | Dolf Luque | 295 | CIN |
| +027+ | 4.52 | Babe Adams | 153 | PIT |
| +028+ | 4.51 | Wilbur Cooper | 300 | PIT |
| +031+ | 4.24 | Pete Alexander | 227.3 | CHN |
| +036+ | 3.99 | Joe Oeschger | 281 | ATL |
| +038+ | 3.84 | Bullet Joe Bush | 229.3 | BOS |
| +040+ | 3.77 | Bill Pertica | 199 | SLN |
| +041+ | 3.71 | Rube Marquard | 246.7 | CIN |
| +044+ | 3.39 | Dana Fillingim | 227.3 | ATL |
| +046+ | 3.31 | Clarence Mitchell | 165 | LAN |
| +047+ | 3.25 | Johnny Morrison | 123 | PIT |
| +048+ | 3.1 | Jesse Haines | 227.3 | SLN |
| +049+ | 3.04 | Fred Toney | 244.3 | SFN |
| +051+ | 2.79 | Benn Karr | 97.3 | BOS |
| +052+ | 2.68 | Walter Johnson | 238 | MIN |
| +065+ | 2.13 | Urban Shocker | 300.7 | BAL |
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