| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 10.12 | 192106050_BAL_NYA |
| Wilbur Cooper | PIT | 4.13 | 192106040_SFN_PIT |
| Dutch Ruether | LAN | 3.36 | 192106060_LAN_CHN |
| Jesse Barnes | SFN | 3.34 | 192106060_SFN_PIT |
| Pete Alexander | CHN | 2.61 | 192106040_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shovel Hodge | CHA | -2.89 | 192106050_CHA_MIN |
| Bernie Boland | BAL | -1.43 | 192106040_BAL_NYA |
| Hooks Dauss | DET | -1.18 | 192106060_DET_OAK |
| Jack Scott | ATL | -1.09 | 192106060_ATL_CIN |
| Jose Acosta | MIN | -0.8 | 192106040_CHA_MIN |
Based on accumulated WAA for this season up to 1921-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.15 | Carl Mays | 112.7 | NYA |
| +002+ | 5.07 | Red Faber | 110.7 | CHA |
| +007+ | 3.66 | Sad Sam Jones | 100 | BOS |
| +008+ | 3.61 | Stan Coveleski | 107 | CLE |
| +010+ | 3.47 | George Mogridge | 76 | MIN |
| +014+ | 3.09 | Rube Benton | 45.3 | SFN |
| +016+ | 2.93 | Whitey Glazner | 76.7 | PIT |
| +018+ | 2.64 | Burleigh Grimes | 77 | LAN |
| +017+ | 2.64 | Eppa Rixey | 90.3 | CIN |
| +019+ | 2.63 | Hugh McQuillan | 89 | ATL |
| +021+ | 2.47 | Jesse Barnes | 82.7 | SFN |
| +023+ | 2.34 | Fred Toney | 81.3 | SFN |
| +025+ | 2.15 | Dana Fillingim | 70.3 | ATL |
| +026+ | 1.98 | Jimmy Zinn | 41.7 | PIT |
| +030+ | 1.92 | Earl Hamilton | 81.7 | PIT |
| +035+ | 1.82 | Herb Pennock | 64.7 | BOS |
| +039+ | 1.79 | Dolf Luque | 101 | CIN |
| +042+ | 1.67 | Wilbur Cooper | 88 | PIT |
| +048+ | 1.49 | Dutch Ruether | 87 | LAN |
| +051+ | 1.38 | Sherry Smith | 77 | LAN |
| XXXXX | 1 | Clarence Mitchell | 44 | LAN |
| XXXXX | 0.9 | Phil Douglas | 46.7 | SFN |
| XXXXX | 0.72 | Jim Middleton | 50.3 | DET |
| XXXXX | 0.71 | Marv Goodwin | 18 | SLN |
| XXXXX | 0.7 | Bill Pertica | 65 | SLN |
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