| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 9.32 | 192107090_NYA_CHA |
| Red Faber | CHA | 5.14 | 192107100_NYA_CHA |
| Eppa Rixey | CIN | 3.23 | 192107110_CIN_ATL |
| Burleigh Grimes | LAN | 2.95 | 192107100_PIT_LAN |
| Babe Adams | PIT | 2.69 | 192107110_PIT_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dickey Kerr | CHA | -2.83 | 192107110_NYA_CHA |
| Eric Erickson | MIN | -2.09 | 192107110_MIN_BAL |
| Bob Hasty | OAK | -1.95 | 192107102_OAK_CLE |
| Bill Hubbell | PHI | -0.87 | 192107090_SLN_PHI |
| Hooks Dauss | DET | -0.8 | 192107111_BOS_DET |
Based on accumulated WAA for this season up to 1921-07-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.4 | Red Faber | 190.7 | CHA |
| +005+ | 6.64 | Eppa Rixey | 151.3 | CIN |
| +008+ | 5.41 | Carl Mays | 171 | NYA |
| +009+ | 5.33 | George Mogridge | 153.7 | MIN |
| +010+ | 4.71 | Burleigh Grimes | 133 | LAN |
| +014+ | 4.15 | Whitey Glazner | 128 | PIT |
| +015+ | 4.01 | Jesse Barnes | 126.7 | SFN |
| +020+ | 3.58 | Wilbur Cooper | 158 | PIT |
| +023+ | 3.15 | Sad Sam Jones | 156.3 | BOS |
| +025+ | 2.98 | Herb Pennock | 120.3 | BOS |
| +026+ | 2.95 | Bill Doak | 98.3 | SLN |
| +028+ | 2.73 | Dolf Luque | 156.3 | CIN |
| +030+ | 2.55 | Dana Fillingim | 108.3 | ATL |
| +031+ | 2.45 | Stan Coveleski | 170.7 | CLE |
| +032+ | 2.41 | Allen Russell | 101.7 | BOS |
| +033+ | 2.37 | Hugh McQuillan | 144 | ATL |
| +034+ | 2.34 | Roy Walker | 92 | SLN |
| +037+ | 2.27 | Bill Piercy | 63.3 | NYA |
| +038+ | 2.18 | Babe Adams | 93.3 | PIT |
| +042+ | 1.92 | Rosy Ryan | 89.7 | SFN |
| +043+ | 1.89 | Fred Toney | 128.7 | SFN |
| +044+ | 1.88 | Roy Moore | 100 | OAK |
| +054+ | 1.76 | Johnny Morrison | 46 | PIT |
| +055+ | 1.73 | Joe Oeschger | 141.7 | ATL |
| +057+ | 1.69 | Pete Alexander | 92.3 | CHN |
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