| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Faber | CHA | 10.94 | 192108030_CHA_BOS |
| Jesse Barnes | SFN | 3.9 | 192108020_SFN_SLN |
| Pete Alexander | CHN | 3.21 | 192108031_ATL_CHN |
| Wilbur Cooper | PIT | 3.16 | 192108030_PHI_PIT |
| Stan Coveleski | CLE | 1.75 | 192108041_CLE_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dixie Davis | BAL | -2.28 | 192108022_BAL_BOS |
| Harry Courtney | MIN | -1.38 | 192108020_DET_MIN |
| Speed Martin | CHN | -0.81 | 192108032_ATL_CHN |
| Howard Ehmke | DET | -0.79 | 192108020_DET_MIN |
| Phil Douglas | SFN | -0.6 | 192108030_SFN_SLN |
Based on accumulated WAA for this season up to 1921-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.65 | Red Faber | 248.7 | CHA |
| +003+ | 9.67 | Eppa Rixey | 200 | CIN |
| +009+ | 6.01 | George Mogridge | 192.3 | MIN |
| +012+ | 5.42 | Carl Mays | 212 | NYA |
| +013+ | 5.07 | Jesse Barnes | 169.3 | SFN |
| +016+ | 4.5 | Burleigh Grimes | 183 | LAN |
| +018+ | 4.08 | Wilbur Cooper | 217 | PIT |
| +019+ | 3.91 | Bill Doak | 134.7 | SLN |
| +021+ | 3.7 | Joe Oeschger | 193 | ATL |
| +023+ | 3.66 | Waite Hoyt | 177.7 | NYA |
| +024+ | 3.66 | Pete Alexander | 157 | CHN |
| +026+ | 3.44 | Babe Adams | 120.3 | PIT |
| +027+ | 3.4 | Sad Sam Jones | 198 | BOS |
| +028+ | 3.36 | Whitey Glazner | 154 | PIT |
| +029+ | 3.33 | Stan Coveleski | 222.7 | CLE |
| +032+ | 3.09 | Bullet Joe Bush | 148.7 | BOS |
| +034+ | 2.62 | Dolf Luque | 201 | CIN |
| +036+ | 2.56 | Hugh McQuillan | 174 | ATL |
| +038+ | 2.52 | Dana Fillingim | 151 | ATL |
| +041+ | 2.46 | Bill Pertica | 146 | SLN |
| +042+ | 2.38 | Earl Hamilton | 161.7 | PIT |
| +055+ | 1.9 | Rube Marquard | 173.7 | CIN |
| +058+ | 1.76 | Guy Morton | 54.3 | CLE |
| +073+ | 1.41 | Jack Scott | 150.3 | ATL |
| +074+ | 1.4 | Art Nehf | 159.3 | SFN |
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