| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 10.12 | 192106050_BAL_NYA |
| Stan Coveleski | CLE | 4.52 | 192106070_CLE_NYA |
| Dutch Ruether | LAN | 3.36 | 192106060_LAN_CHN |
| Jesse Barnes | SFN | 3.34 | 192106060_SFN_PIT |
| Hippo Vaughn | CHN | 1.01 | 192106050_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shovel Hodge | CHA | -2.89 | 192106050_CHA_MIN |
| Dutch Leonard | DET | -1.58 | 192106070_DET_MIN |
| Jack Scott | ATL | -1.09 | 192106060_ATL_CIN |
| Tom Zachary | MIN | -0.87 | 192106070_DET_MIN |
| George Smith | PHI | -0.75 | 192106050_PHI_SLN |
Based on accumulated WAA for this season up to 1921-06-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.23 | Carl Mays | 112.7 | NYA |
| +002+ | 5.15 | Red Faber | 110.7 | CHA |
| +007+ | 3.72 | Sad Sam Jones | 100 | BOS |
| +008+ | 3.51 | George Mogridge | 76 | MIN |
| +014+ | 2.98 | Stan Coveleski | 110.3 | CLE |
| +013+ | 2.98 | Whitey Glazner | 76.7 | PIT |
| +015+ | 2.89 | Rube Benton | 49.3 | SFN |
| +017+ | 2.71 | Burleigh Grimes | 77 | LAN |
| +018+ | 2.71 | Eppa Rixey | 90.3 | CIN |
| +019+ | 2.69 | Hugh McQuillan | 89 | ATL |
| +020+ | 2.54 | Jesse Barnes | 82.7 | SFN |
| +023+ | 2.41 | Fred Toney | 81.3 | SFN |
| +026+ | 2.2 | Dana Fillingim | 70.3 | ATL |
| +027+ | 1.98 | Earl Hamilton | 81.7 | PIT |
| +029+ | 1.86 | Herb Pennock | 64.7 | BOS |
| +032+ | 1.85 | Dolf Luque | 101 | CIN |
| +039+ | 1.73 | Wilbur Cooper | 88 | PIT |
| +043+ | 1.64 | Jimmy Zinn | 46.7 | PIT |
| +046+ | 1.57 | Dutch Ruether | 87 | LAN |
| +049+ | 1.45 | Sherry Smith | 77 | LAN |
| XXXXX | 1.16 | Rube Marquard | 91.7 | CIN |
| XXXXX | 1.05 | Bob Shawkey | 43.7 | NYA |
| XXXXX | 0.95 | Phil Douglas | 46.7 | SFN |
| XXXXX | 0.94 | Jim Middleton | 52.3 | DET |
| XXXXX | 0.93 | Allen Russell | 61.7 | BOS |
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