| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Faber | CHA | 10.4 | 192108140_CHA_CLE |
| Eppa Rixey | CIN | 7.55 | 192108140_SLN_CIN |
| Jesse Barnes | SFN | 2.94 | 192108150_PHI_SFN |
| Babe Adams | PIT | 2.24 | 192108162_PIT_PHI |
| Burleigh Grimes | LAN | 2.21 | 192108160_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dixie Davis | BAL | -1.59 | 192108150_DET_BAL |
| Doug McWeeny | CHA | -1.03 | 192108150_CHA_CLE |
| Phil Douglas | SFN | -0.84 | 192108140_PHI_SFN |
| Hooks Dauss | DET | -0.82 | 192108150_DET_BAL |
| Lee Meadows | PHI | -0.73 | 192108150_PHI_SFN |
Based on accumulated WAA for this season up to 1921-08-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.35 | Red Faber | 269.3 | CHA |
| +003+ | 10.71 | Eppa Rixey | 229 | CIN |
| +008+ | 6.44 | George Mogridge | 210.7 | MIN |
| +010+ | 6.13 | Carl Mays | 239 | NYA |
| +013+ | 5.56 | Jesse Barnes | 191.3 | SFN |
| +015+ | 5.29 | Burleigh Grimes | 210 | LAN |
| +017+ | 5.12 | Bill Doak | 154.7 | SLN |
| +018+ | 4.85 | Sad Sam Jones | 216 | BOS |
| +022+ | 4.22 | Whitey Glazner | 173 | PIT |
| +023+ | 4.1 | Stan Coveleski | 240.7 | CLE |
| +027+ | 3.39 | Babe Adams | 129.3 | PIT |
| +028+ | 3.32 | Bullet Joe Bush | 164.7 | BOS |
| +030+ | 3.11 | Joe Oeschger | 214 | ATL |
| +032+ | 2.92 | Hugh McQuillan | 198.3 | ATL |
| +033+ | 2.85 | Dana Fillingim | 168.3 | ATL |
| +034+ | 2.83 | Wilbur Cooper | 243 | PIT |
| +038+ | 2.62 | Dolf Luque | 219 | CIN |
| +040+ | 2.58 | Waite Hoyt | 194.7 | NYA |
| +041+ | 2.54 | Earl Hamilton | 170.7 | PIT |
| +045+ | 2.44 | Rube Marquard | 190.7 | CIN |
| +049+ | 2.19 | Guy Morton | 70.3 | CLE |
| +055+ | 2.03 | Johnny Morrison | 66 | PIT |
| +059+ | 1.86 | Bill Pertica | 149 | SLN |
| +060+ | 1.75 | Pete Alexander | 179.3 | CHN |
| +064+ | 1.63 | Fred Toney | 183 | SFN |
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