| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 8.36 | 192109140_SFN_CIN |
| Carl Mays | NYA | 6.45 | 192109151_BAL_NYA |
| Burleigh Grimes | LAN | 4.31 | 192109150_LAN_SLN |
| Jesse Barnes | SFN | 3.43 | 192109150_SFN_CIN |
| Stan Coveleski | CLE | 1.81 | 192109140_CLE_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dixie Davis | BAL | -4.37 | 192109140_BAL_MIN |
| Roy Wilkinson | CHA | -3.6 | 192109160_CHA_BOS |
| Ray Caldwell | CLE | -2.92 | 192109152_CLE_OAK |
| Rollie Naylor | OAK | -1.84 | 192109140_CLE_OAK |
| Howard Ehmke | DET | -1.43 | 192109160_DET_OAK |
Based on accumulated WAA for this season up to 1921-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 9.06 | Eppa Rixey | 278.7 | CIN |
| +010+ | 7.97 | Carl Mays | 309.3 | NYA |
| +012+ | 7.37 | Burleigh Grimes | 269.3 | LAN |
| +014+ | 6.64 | George Mogridge | 269.3 | MIN |
| +015+ | 6.63 | Jesse Barnes | 249.3 | SFN |
| +019+ | 5.98 | Waite Hoyt | 253 | NYA |
| +020+ | 5.77 | Sad Sam Jones | 273.7 | BOS |
| +023+ | 5.24 | Stan Coveleski | 288 | CLE |
| +024+ | 5.11 | Whitey Glazner | 219.3 | PIT |
| +026+ | 4.49 | Wilbur Cooper | 300 | PIT |
| +027+ | 4.3 | Dolf Luque | 286 | CIN |
| +028+ | 4.3 | Bill Pertica | 198 | SLN |
| +029+ | 4.24 | Pete Alexander | 227.3 | CHN |
| +030+ | 4.23 | Dana Fillingim | 223.3 | ATL |
| +038+ | 3.81 | Joe Oeschger | 279.7 | ATL |
| +040+ | 3.71 | Rube Marquard | 246.7 | CIN |
| +044+ | 3.4 | Bullet Joe Bush | 220.3 | BOS |
| +045+ | 3.33 | Bill Sherdel | 123.7 | SLN |
| +046+ | 3.27 | Clarence Mitchell | 165 | LAN |
| +047+ | 3.15 | Johnny Morrison | 122 | PIT |
| +048+ | 2.98 | Benn Karr | 88.3 | BOS |
| +050+ | 2.92 | Fred Toney | 243.3 | SFN |
| +051+ | 2.87 | Jesse Haines | 218.3 | SLN |
| +063+ | 2.12 | Urban Shocker | 300.7 | BAL |
| +064+ | 2.04 | Walter Johnson | 229 | MIN |
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