| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 10.12 | 192106010_NYA_MIN |
| Stan Coveleski | CLE | 5.45 | 192106030_CLE_BOS |
| Dutch Ruether | LAN | 4.09 | 192106010_LAN_ATL |
| Fred Toney | SFN | 3.31 | 192106030_SFN_PIT |
| Red Faber | CHA | 2.28 | 192106030_CHA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rollie Naylor | OAK | -1.94 | 192106030_DET_OAK |
| Dutch Leonard | DET | -1.4 | 192106030_DET_OAK |
| Harry Courtney | MIN | -1.3 | 192106020_CHA_MIN |
| Dickey Kerr | CHA | -0.97 | 192106020_CHA_MIN |
| George Uhle | CLE | -0.9 | 192106020_CLE_BOS |
Based on accumulated WAA for this season up to 1921-06-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.88 | Carl Mays | 103.7 | NYA |
| +002+ | 4.95 | Red Faber | 110.7 | CHA |
| +007+ | 3.51 | Stan Coveleski | 107 | CLE |
| +008+ | 3.44 | George Mogridge | 76 | MIN |
| +009+ | 3.35 | Whitey Glazner | 72.7 | PIT |
| +014+ | 3.06 | Rube Benton | 45.3 | SFN |
| +016+ | 2.74 | Sad Sam Jones | 91 | BOS |
| +019+ | 2.54 | Wilbur Cooper | 82 | PIT |
| +020+ | 2.32 | Dana Fillingim | 66 | ATL |
| +021+ | 2.3 | Fred Toney | 81.3 | SFN |
| +022+ | 2.23 | Jesse Barnes | 74 | SFN |
| +023+ | 2.18 | Burleigh Grimes | 68 | LAN |
| +024+ | 2.03 | Herb Pennock | 62.7 | BOS |
| +026+ | 1.96 | Jimmy Zinn | 41.7 | PIT |
| +027+ | 1.88 | Earl Hamilton | 81.7 | PIT |
| +034+ | 1.74 | Eppa Rixey | 81.3 | CIN |
| +035+ | 1.72 | Hugh McQuillan | 80 | ATL |
| +042+ | 1.55 | Rosy Ryan | 49.3 | SFN |
| +045+ | 1.51 | Dolf Luque | 92 | CIN |
| +047+ | 1.44 | Dutch Ruether | 78 | LAN |
| XXXXX | 0.98 | Clarence Mitchell | 44 | LAN |
| XXXXX | 0.78 | Dave Keefe | 59.7 | OAK |
| XXXXX | 0.71 | Marv Goodwin | 18 | SLN |
| XXXXX | 0.7 | Jim Middleton | 50.3 | DET |
| XXXXX | 0.69 | Bill Pertica | 65 | SLN |
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