| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 8.22 | 192106200_NYA_BOS |
| Red Faber | CHA | 3.78 | 192106220_CLE_CHA |
| Pete Alexander | CHN | 3.16 | 192106212_CHN_SLN |
| Wilbur Cooper | PIT | 3.02 | 192106220_PIT_CIN |
| Phil Douglas | SFN | 1.6 | 192106220_ATL_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Hasty | OAK | -2.24 | 192106202_MIN_OAK |
| Doug McWeeny | CHA | -1.01 | 192106210_CLE_CHA |
| Tom Zachary | MIN | -0.92 | 192106220_MIN_OAK |
| Bill Hubbell | PHI | -0.91 | 192106210_PHI_LAN |
| Speed Martin | CHN | -0.84 | 192106211_CHN_SLN |
Based on accumulated WAA for this season up to 1921-06-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.86 | Red Faber | 148.3 | CHA |
| +004+ | 5.55 | Carl Mays | 134.7 | NYA |
| +007+ | 4.71 | George Mogridge | 113 | MIN |
| +008+ | 4.62 | Eppa Rixey | 120.3 | CIN |
| +009+ | 4.58 | Jesse Barnes | 109.7 | SFN |
| +012+ | 3.9 | Burleigh Grimes | 97 | LAN |
| +013+ | 3.6 | Stan Coveleski | 137.7 | CLE |
| +016+ | 3.27 | Dolf Luque | 128 | CIN |
| +019+ | 2.96 | Whitey Glazner | 94.7 | PIT |
| +020+ | 2.95 | Herb Pennock | 92.7 | BOS |
| +021+ | 2.81 | Bill Piercy | 63.3 | NYA |
| +022+ | 2.75 | Wilbur Cooper | 124 | PIT |
| +024+ | 2.5 | Dana Fillingim | 94.7 | ATL |
| +025+ | 2.46 | Fred Toney | 98.7 | SFN |
| +026+ | 2.4 | Sad Sam Jones | 131.3 | BOS |
| +032+ | 2.21 | Earl Hamilton | 104.7 | PIT |
| +034+ | 2.2 | Rube Benton | 59.3 | SFN |
| +038+ | 2.02 | Jimmy Zinn | 57.7 | PIT |
| +056+ | 1.5 | Bill Doak | 60.3 | SLN |
| +058+ | 1.48 | Allen Russell | 73.7 | BOS |
| +059+ | 1.44 | Bill Pertica | 94 | SLN |
| +060+ | 1.41 | George Uhle | 123.7 | CLE |
| +061+ | 1.4 | Rube Marquard | 106.7 | CIN |
| +062+ | 1.4 | Hugh McQuillan | 114 | ATL |
| +064+ | 1.32 | Sherry Smith | 92 | LAN |
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