| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eppa Rixey | CIN | 5.42 | 192109051_CIN_PIT |
| Sad Sam Jones | BOS | 4.98 | 192109051_NYA_BOS |
| George Mogridge | MIN | 4.11 | 192109052_MIN_OAK |
| Bill Doak | SLN | 3.5 | 192109052_CHN_SLN |
| Jesse Barnes | SFN | 3.21 | 192109060_ATL_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Wilkinson | CHA | -3.49 | 192109052_CHA_DET |
| Bob Hasty | OAK | -1.86 | 192109051_MIN_OAK |
| Ray Kolp | BAL | -1.44 | 192109052_BAL_CLE |
| Rip Collins | NYA | -1.01 | 192109052_NYA_BOS |
| Buck Freeman | CHN | -0.93 | 192109052_CHN_SLN |
Based on accumulated WAA for this season up to 1921-09-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9.23 | Eppa Rixey | 262.7 | CIN |
| +008+ | 7.92 | George Mogridge | 256.7 | MIN |
| +009+ | 7.45 | Carl Mays | 282.3 | NYA |
| +013+ | 6.82 | Burleigh Grimes | 253.3 | LAN |
| +015+ | 6.37 | Bill Doak | 182.7 | SLN |
| +016+ | 6.19 | Jesse Barnes | 231.3 | SFN |
| +019+ | 5.63 | Sad Sam Jones | 262.7 | BOS |
| +022+ | 4.96 | Waite Hoyt | 238.3 | NYA |
| +023+ | 4.65 | Whitey Glazner | 207.7 | PIT |
| +024+ | 4.49 | Joe Oeschger | 260.3 | ATL |
| +025+ | 4.47 | Stan Coveleski | 272 | CLE |
| +026+ | 4.29 | Dana Fillingim | 206.3 | ATL |
| +028+ | 4.08 | Wilbur Cooper | 279.7 | PIT |
| +029+ | 4.02 | Pete Alexander | 212.3 | CHN |
| +034+ | 3.65 | Bill Sherdel | 114 | SLN |
| +036+ | 3.63 | Bill Pertica | 187 | SLN |
| +039+ | 3.45 | Dolf Luque | 266 | CIN |
| +045+ | 2.88 | Benn Karr | 72.3 | BOS |
| +047+ | 2.69 | Rube Marquard | 222.7 | CIN |
| +049+ | 2.36 | Earl Hamilton | 198.7 | PIT |
| +051+ | 2.35 | Clarence Mitchell | 151.3 | LAN |
| +057+ | 2 | Bullet Joe Bush | 202.3 | BOS |
| +059+ | 1.93 | Allen Russell | 153 | BOS |
| +061+ | 1.92 | Johnny Morrison | 104 | PIT |
| +066+ | 1.86 | Bob Shawkey | 205.7 | NYA |
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