| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stan Coveleski | CLE | 5.24 | 192106150_CLE_OAK |
| Fred Toney | SFN | 4.14 | 192106140_SFN_SLN |
| Wilbur Cooper | PIT | 3.3 | 192106150_LAN_PIT |
| Pete Alexander | CHN | 3.16 | 192106160_SFN_CHN |
| Dolf Luque | CIN | 2 | 192106150_PHI_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Hasty | OAK | -2.41 | 192106150_CLE_OAK |
| Roy Wilkinson | CHA | -2.25 | 192106160_CHA_NYA |
| George Smith | PHI | -0.82 | 192106150_PHI_CIN |
| Jim Shaw | MIN | -0.71 | 192106140_CLE_MIN |
| Rip Collins | NYA | -0.67 | 192106140_DET_NYA |
Based on accumulated WAA for this season up to 1921-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 5.39 | Red Faber | 130.3 | CHA |
| +006+ | 4.7 | George Mogridge | 94 | MIN |
| +010+ | 4.05 | Stan Coveleski | 133.7 | CLE |
| +011+ | 3.96 | Eppa Rixey | 108.3 | CIN |
| +015+ | 3.55 | Dolf Luque | 119 | CIN |
| +014+ | 3.55 | Jesse Barnes | 96.7 | SFN |
| +017+ | 3.05 | Burleigh Grimes | 86 | LAN |
| +018+ | 3 | Whitey Glazner | 94.7 | PIT |
| +019+ | 2.95 | Fred Toney | 97 | SFN |
| +020+ | 2.87 | Sad Sam Jones | 115.7 | BOS |
| +021+ | 2.65 | Rube Benton | 57.3 | SFN |
| +022+ | 2.63 | Earl Hamilton | 99.7 | PIT |
| +023+ | 2.62 | Herb Pennock | 73.7 | BOS |
| +035+ | 1.92 | Bill Pertica | 90 | SLN |
| +038+ | 1.86 | Jimmy Zinn | 55.7 | PIT |
| +045+ | 1.69 | Wilbur Cooper | 103 | PIT |
| +047+ | 1.62 | Red Causey | 41.7 | PHI |
| +049+ | 1.58 | Hugh McQuillan | 105 | ATL |
| +055+ | 1.49 | Rube Marquard | 106.7 | CIN |
| +056+ | 1.47 | Bob Shawkey | 62.7 | NYA |
| +059+ | 1.34 | Joe Oeschger | 98 | ATL |
| +062+ | 1.32 | Sherry Smith | 92 | LAN |
| XXXXX | 1.17 | George Uhle | 114.7 | CLE |
| XXXXX | 1.16 | Babe Adams | 68.3 | PIT |
| XXXXX | 1.16 | Bill Doak | 52.3 | SLN |
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