| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 8.38 | 192107042_OAK_NYA |
| Red Faber | CHA | 4.91 | 192107060_DET_CHA |
| Fred Toney | SFN | 3.99 | 192107060_LAN_SFN |
| Wilbur Cooper | PIT | 3.91 | 192107042_SLN_PIT |
| Burleigh Grimes | LAN | 3.34 | 192107060_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eric Erickson | MIN | -2.94 | 192107062_MIN_BOS |
| Howard Ehmke | DET | -1.88 | 192107050_DET_BAL |
| Dickey Kerr | CHA | -1.79 | 192107042_CHA_CLE |
| Bob Hasty | OAK | -1.23 | 192107050_OAK_NYA |
| Allen Sothoron | CLE | -1.11 | 192107050_CHA_CLE |
Based on accumulated WAA for this season up to 1921-07-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.01 | Red Faber | 181.7 | CHA |
| +005+ | 6.27 | Eppa Rixey | 143.3 | CIN |
| +006+ | 6.24 | Carl Mays | 162.7 | NYA |
| +008+ | 5.3 | George Mogridge | 144.7 | MIN |
| +010+ | 4.54 | Burleigh Grimes | 124 | LAN |
| +012+ | 4.33 | Jesse Barnes | 120.7 | SFN |
| +019+ | 3.52 | Whitey Glazner | 119 | PIT |
| +020+ | 3.37 | Wilbur Cooper | 149 | PIT |
| +023+ | 2.95 | Sad Sam Jones | 147.3 | BOS |
| +025+ | 2.87 | Dolf Luque | 149.3 | CIN |
| +026+ | 2.69 | Stan Coveleski | 161.7 | CLE |
| +027+ | 2.57 | Dana Fillingim | 108.3 | ATL |
| +029+ | 2.57 | Bill Doak | 94.3 | SLN |
| +030+ | 2.45 | Allen Russell | 101.7 | BOS |
| +031+ | 2.44 | Johnny Morrison | 42 | PIT |
| +032+ | 2.41 | Rube Marquard | 129.7 | CIN |
| +033+ | 2.35 | Herb Pennock | 111.3 | BOS |
| +034+ | 2.33 | Bill Piercy | 63.3 | NYA |
| +043+ | 1.97 | Elam Vangilder | 63.3 | BAL |
| +045+ | 1.95 | Earl Hamilton | 124.7 | PIT |
| +046+ | 1.91 | Fred Toney | 121.7 | SFN |
| +051+ | 1.69 | Roy Walker | 83 | SLN |
| +053+ | 1.68 | Waite Hoyt | 126.3 | NYA |
| +057+ | 1.64 | Red Causey | 50.7 | PHI |
| +064+ | 1.55 | Hugh McQuillan | 135 | ATL |
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