| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jesse Barnes | SFN | 2.94 | 192108150_PHI_SFN |
| George Mogridge | MIN | 2.56 | 192108170_MIN_BAL |
| Babe Adams | PIT | 2.24 | 192108162_PIT_PHI |
| Burleigh Grimes | LAN | 2.21 | 192108160_LAN_SFN |
| Stan Coveleski | CLE | 1.77 | 192108170_OAK_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Wilkinson | CHA | -3.48 | 192108170_NYA_CHA |
| Dixie Davis | BAL | -1.59 | 192108150_DET_BAL |
| Hooks Dauss | DET | -0.82 | 192108150_DET_BAL |
| Lee Meadows | PHI | -0.73 | 192108150_PHI_SFN |
| Percy Jones | CHN | -0.47 | 192108172_CHN_ATL |
Based on accumulated WAA for this season up to 1921-08-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.45 | Red Faber | 269.3 | CHA |
| +003+ | 10.77 | Eppa Rixey | 229 | CIN |
| +009+ | 6.21 | Carl Mays | 239 | NYA |
| +012+ | 5.82 | George Mogridge | 214.7 | MIN |
| +014+ | 5.59 | Jesse Barnes | 191.3 | SFN |
| +015+ | 5.32 | Burleigh Grimes | 210 | LAN |
| +016+ | 5.15 | Bill Doak | 154.7 | SLN |
| +019+ | 4.89 | Sad Sam Jones | 216 | BOS |
| +022+ | 4.25 | Whitey Glazner | 173 | PIT |
| +025+ | 3.44 | Hugh McQuillan | 208.3 | ATL |
| +026+ | 3.43 | Stan Coveleski | 242 | CLE |
| +027+ | 3.41 | Babe Adams | 129.3 | PIT |
| +030+ | 3.35 | Bullet Joe Bush | 164.7 | BOS |
| +031+ | 3.13 | Joe Oeschger | 214 | ATL |
| +035+ | 2.87 | Dana Fillingim | 168.3 | ATL |
| +034+ | 2.87 | Wilbur Cooper | 243 | PIT |
| +038+ | 2.68 | Dolf Luque | 219 | CIN |
| +039+ | 2.65 | Waite Hoyt | 194.7 | NYA |
| +049+ | 2.2 | Guy Morton | 70.3 | CLE |
| +054+ | 2.04 | Johnny Morrison | 66 | PIT |
| +057+ | 1.88 | Bill Pertica | 149 | SLN |
| +060+ | 1.84 | Bob Shawkey | 175 | NYA |
| +061+ | 1.76 | Pete Alexander | 179.3 | CHN |
| +062+ | 1.74 | Fritz Coumbe | 75.3 | CIN |
| +065+ | 1.56 | Dutch Leonard | 188.3 | DET |
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