| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 8.36 | 192109140_SFN_CIN |
| Carl Mays | NYA | 6.45 | 192109151_BAL_NYA |
| George Mogridge | MIN | 4.85 | 192109130_BAL_MIN |
| Burleigh Grimes | LAN | 4.31 | 192109150_LAN_SLN |
| Sad Sam Jones | BOS | 4.18 | 192109130_DET_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dixie Davis | BAL | -4.37 | 192109140_BAL_MIN |
| Ray Caldwell | CLE | -2.92 | 192109152_CLE_OAK |
| Dickey Kerr | CHA | -2.49 | 192109130_CHA_NYA |
| Rollie Naylor | OAK | -1.84 | 192109140_CLE_OAK |
| Jimmy Ring | PHI | -0.87 | 192109130_PHI_CHN |
Based on accumulated WAA for this season up to 1921-09-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 9.1 | Eppa Rixey | 278.7 | CIN |
| +009+ | 8.01 | Carl Mays | 309.3 | NYA |
| +011+ | 7.4 | Burleigh Grimes | 269.3 | LAN |
| +014+ | 6.67 | George Mogridge | 269.3 | MIN |
| +015+ | 6.66 | Jesse Barnes | 249.3 | SFN |
| +019+ | 6.01 | Waite Hoyt | 253 | NYA |
| +020+ | 5.8 | Sad Sam Jones | 273.7 | BOS |
| +023+ | 5.27 | Stan Coveleski | 288 | CLE |
| +025+ | 4.61 | Whitey Glazner | 213.7 | PIT |
| +026+ | 4.52 | Wilbur Cooper | 300 | PIT |
| +027+ | 4.34 | Dolf Luque | 286 | CIN |
| +028+ | 4.32 | Bill Pertica | 198 | SLN |
| +030+ | 4.26 | Pete Alexander | 227.3 | CHN |
| +031+ | 4.24 | Dana Fillingim | 223.3 | ATL |
| +032+ | 4.17 | Joe Oeschger | 276.7 | ATL |
| +039+ | 3.74 | Rube Marquard | 246.7 | CIN |
| +044+ | 3.35 | Bill Sherdel | 123.7 | SLN |
| +045+ | 3.29 | Clarence Mitchell | 165 | LAN |
| +046+ | 3.17 | Johnny Morrison | 122 | PIT |
| +047+ | 2.99 | Benn Karr | 88.3 | BOS |
| +049+ | 2.89 | Jesse Haines | 218.3 | SLN |
| +050+ | 2.78 | Bullet Joe Bush | 211.3 | BOS |
| +051+ | 2.62 | Earl Hamilton | 205.7 | PIT |
| +061+ | 2.1 | Fred Toney | 234.3 | SFN |
| +063+ | 2.07 | Walter Johnson | 229 | MIN |
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