| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 7.09 | 192106240_MIN_NYA |
| Red Faber | CHA | 4.95 | 192106250_DET_CHA |
| Wilbur Cooper | PIT | 4.14 | 192106252_PIT_SLN |
| Pete Alexander | CHN | 3.85 | 192106260_PIT_CHN |
| Dolf Luque | CIN | 3.02 | 192106250_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rollie Naylor | OAK | -2.11 | 192106251_OAK_BOS |
| Roy Wilkinson | CHA | -2 | 192106240_CLE_CHA |
| Howard Ehmke | DET | -1.91 | 192106250_DET_CHA |
| Stan Baumgartner | PHI | -1.13 | 192106240_SFN_PHI |
| Waite Hoyt | NYA | -0.92 | 192106260_MIN_NYA |
Based on accumulated WAA for this season up to 1921-06-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 5.82 | Carl Mays | 143.7 | NYA |
| +006+ | 5.42 | Red Faber | 154.3 | CHA |
| +008+ | 4.67 | Eppa Rixey | 120.3 | CIN |
| +009+ | 4.2 | George Mogridge | 120 | MIN |
| +011+ | 3.92 | Burleigh Grimes | 97 | LAN |
| +015+ | 3.43 | Herb Pennock | 101.7 | BOS |
| +017+ | 3.29 | Whitey Glazner | 104.7 | PIT |
| +019+ | 3.21 | Wilbur Cooper | 133 | PIT |
| +022+ | 3.04 | Stan Coveleski | 144.3 | CLE |
| +023+ | 2.82 | Dolf Luque | 133.7 | CIN |
| +024+ | 2.82 | Bill Piercy | 63.3 | NYA |
| +026+ | 2.56 | Dana Fillingim | 94.7 | ATL |
| +027+ | 2.51 | Fred Toney | 107.7 | SFN |
| +039+ | 1.97 | Rube Benton | 63.3 | SFN |
| +043+ | 1.82 | Red Causey | 49.7 | PHI |
| +045+ | 1.71 | Bill Doak | 69.3 | SLN |
| +046+ | 1.67 | Jimmy Zinn | 62.7 | PIT |
| +053+ | 1.59 | Rube Marquard | 114.7 | CIN |
| +058+ | 1.51 | Bullet Joe Bush | 74 | BOS |
| +061+ | 1.48 | Allen Russell | 73.7 | BOS |
| +062+ | 1.4 | Hugh McQuillan | 122 | ATL |
| +064+ | 1.36 | Elam Vangilder | 37.3 | BAL |
| +065+ | 1.36 | Babe Adams | 77.3 | PIT |
| +067+ | 1.25 | Dave Keefe | 88.7 | OAK |
| XXXXX | 1.2 | Jesse Haines | 113.7 | SLN |
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