| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 10.12 | 192106010_NYA_MIN |
| Jesse Barnes | SFN | 5.64 | 192105310_PHI_SFN |
| Wilbur Cooper | PIT | 5.11 | 192105310_CHN_PIT |
| Dutch Ruether | LAN | 4.09 | 192106010_LAN_ATL |
| Hippo Vaughn | CHN | 1.52 | 192105310_CHN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Hasty | OAK | -2.02 | 192105312_BOS_OAK |
| Hooks Dauss | DET | -1.38 | 192105310_CLE_DET |
| Harry Courtney | MIN | -1.3 | 192106020_CHA_MIN |
| Elmer Myers | BOS | -1.08 | 192105311_BOS_OAK |
| Dickey Kerr | CHA | -0.97 | 192106020_CHA_MIN |
Based on accumulated WAA for this season up to 1921-06-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.82 | Carl Mays | 103.7 | NYA |
| +002+ | 4.66 | Red Faber | 101.7 | CHA |
| +007+ | 3.6 | Stan Coveleski | 102 | CLE |
| +008+ | 3.48 | George Mogridge | 68 | MIN |
| +010+ | 3.31 | Whitey Glazner | 72.7 | PIT |
| +014+ | 3.04 | Rube Benton | 45.3 | SFN |
| +017+ | 2.7 | Sad Sam Jones | 91 | BOS |
| +019+ | 2.49 | Wilbur Cooper | 82 | PIT |
| +020+ | 2.28 | Dana Fillingim | 66 | ATL |
| +021+ | 2.19 | Jesse Barnes | 74 | SFN |
| +023+ | 2.13 | Burleigh Grimes | 68 | LAN |
| +024+ | 2.12 | Herb Pennock | 59.7 | BOS |
| +026+ | 1.94 | Jimmy Zinn | 41.7 | PIT |
| +034+ | 1.7 | Eppa Rixey | 81.3 | CIN |
| +035+ | 1.68 | Hugh McQuillan | 80 | ATL |
| +040+ | 1.63 | Earl Hamilton | 72.7 | PIT |
| +043+ | 1.53 | Rosy Ryan | 49.3 | SFN |
| +044+ | 1.47 | Dolf Luque | 92 | CIN |
| +046+ | 1.38 | Dutch Ruether | 78 | LAN |
| XXXXX | 0.94 | Clarence Mitchell | 44 | LAN |
| XXXXX | 0.87 | Sherry Smith | 68 | LAN |
| XXXXX | 0.83 | Bill Pertica | 56 | SLN |
| XXXXX | 0.75 | Dave Keefe | 59.7 | OAK |
| XXXXX | 0.7 | Marv Goodwin | 18 | SLN |
| XXXXX | 0.66 | Jim Middleton | 50.3 | DET |
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