| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 6.72 | 192107180_NYA_DET |
| Eppa Rixey | CIN | 4.69 | 192107200_CIN_SFN |
| Pete Alexander | CHN | 3.15 | 192107201_CHN_PHI |
| Babe Adams | PIT | 2.3 | 192107190_PIT_SFN |
| Stan Coveleski | CLE | 2 | 192107200_NYA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shovel Hodge | CHA | -6.19 | 192107182_BOS_CHA |
| Stan Baumgartner | PHI | -2.31 | 192107182_CIN_PHI |
| Eric Erickson | MIN | -0.94 | 192107190_MIN_CLE |
| Howard Ehmke | DET | -0.87 | 192107180_NYA_DET |
| Bob Hasty | OAK | -0.84 | 192107190_OAK_BAL |
Based on accumulated WAA for this season up to 1921-07-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.59 | Red Faber | 209.7 | CHA |
| +003+ | 7.91 | Eppa Rixey | 171 | CIN |
| +006+ | 6.55 | Carl Mays | 190 | NYA |
| +009+ | 5.73 | George Mogridge | 168.7 | MIN |
| +013+ | 4.57 | Jesse Barnes | 143.7 | SFN |
| +020+ | 3.35 | Pete Alexander | 120 | CHN |
| +022+ | 3.23 | Sad Sam Jones | 175 | BOS |
| +023+ | 3.22 | Wilbur Cooper | 181 | PIT |
| +024+ | 3.21 | Bill Doak | 104.3 | SLN |
| +027+ | 2.76 | Burleigh Grimes | 146 | LAN |
| +028+ | 2.72 | Joe Oeschger | 168 | ATL |
| +029+ | 2.7 | Babe Adams | 102.3 | PIT |
| +030+ | 2.67 | Hugh McQuillan | 154 | ATL |
| +031+ | 2.55 | Herb Pennock | 131 | BOS |
| +033+ | 2.49 | Bullet Joe Bush | 121.7 | BOS |
| +035+ | 2.39 | Dana Fillingim | 126.3 | ATL |
| +036+ | 2.34 | Bob Shawkey | 129.7 | NYA |
| +037+ | 2.31 | Waite Hoyt | 151.7 | NYA |
| +041+ | 2.23 | Elmer Ponder | 48.7 | TOT |
| +050+ | 2.06 | Stan Coveleski | 195.7 | CLE |
| +053+ | 2.02 | Fred Toney | 136.7 | SFN |
| +059+ | 1.78 | Allen Russell | 118.7 | BOS |
| +063+ | 1.63 | Earl Hamilton | 136.3 | PIT |
| +073+ | 1.38 | Slim Harriss | 154.7 | OAK |
| +076+ | 1.32 | Rosy Ryan | 102.7 | SFN |
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