| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 9.62 | 192105200_NYA_CHA |
| Fred Toney | SFN | 4.88 | 192105200_CHN_SFN |
| Babe Adams | PIT | 4.86 | 192105190_PIT_LAN |
| Burleigh Grimes | LAN | 1.3 | 192105210_PIT_LAN |
| Bill Doak | SLN | 0.71 | 192105200_SLN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Scott Perry | OAK | -1.1 | 192105190_OAK_CLE |
| Mule Watson | ATL | -1.06 | 192105190_CIN_ATL |
| Fritz Coumbe | CIN | -0.78 | 192105200_CIN_ATL |
| Elmer Myers | BOS | -0.76 | 192105200_BOS_DET |
| Stan Baumgartner | PHI | -0.73 | 192105210_SLN_PHI |
Based on accumulated WAA for this season up to 1921-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.7 | Red Faber | 73.7 | CHA |
| +002+ | 4.21 | Carl Mays | 80.7 | NYA |
| +007+ | 2.65 | Stan Coveleski | 76 | CLE |
| +008+ | 2.61 | Jesse Barnes | 55.7 | SFN |
| +011+ | 2.5 | Whitey Glazner | 55.7 | PIT |
| +012+ | 2.46 | Sad Sam Jones | 68 | BOS |
| +013+ | 2.44 | Wilbur Cooper | 55 | PIT |
| +015+ | 2.32 | George Mogridge | 49 | MIN |
| +016+ | 2.05 | Eppa Rixey | 61.7 | CIN |
| +017+ | 1.98 | Rube Benton | 26 | SFN |
| +018+ | 1.96 | Burleigh Grimes | 51 | LAN |
| +026+ | 1.45 | Dana Fillingim | 46 | ATL |
| +028+ | 1.42 | Earl Hamilton | 62.3 | PIT |
| XXXXX | 1.22 | Herb Pennock | 48.3 | BOS |
| XXXXX | 1.18 | Fred Toney | 60.7 | SFN |
| XXXXX | 1.17 | Waite Hoyt | 49.7 | NYA |
| XXXXX | 1.07 | Hugh McQuillan | 58 | ATL |
| XXXXX | 1.06 | Bill Pertica | 53 | SLN |
| XXXXX | 1.03 | Lefty Tyler | 20 | CHN |
| XXXXX | 0.94 | Babe Adams | 45.3 | PIT |
| XXXXX | 0.7 | Rosy Ryan | 32.7 | SFN |
| XXXXX | 0.63 | Roy Moore | 46.7 | OAK |
| XXXXX | 0.61 | Dolf Luque | 66.3 | CIN |
| XXXXX | 0.58 | Urban Shocker | 73.3 | BAL |
| XXXXX | 0.49 | Dutch Ruether | 51 | LAN |
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