| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stan Coveleski | CLE | 4.52 | 192106070_CLE_NYA |
| Dutch Ruether | LAN | 3.36 | 192106060_LAN_CHN |
| Jesse Barnes | SFN | 3.34 | 192106060_SFN_PIT |
| Red Faber | CHA | 2.54 | 192106080_CHA_OAK |
| Bob Shawkey | NYA | 0.94 | 192106070_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dickey Kerr | CHA | -1.61 | 192106060_CHA_MIN |
| Dutch Leonard | DET | -1.58 | 192106070_DET_MIN |
| Slim Harriss | OAK | -1.13 | 192106080_CHA_OAK |
| Jack Scott | ATL | -1.09 | 192106060_ATL_CIN |
| Tom Zachary | MIN | -0.87 | 192106070_DET_MIN |
Based on accumulated WAA for this season up to 1921-06-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.25 | Carl Mays | 112.7 | NYA |
| +003+ | 4.86 | Red Faber | 120.7 | CHA |
| +006+ | 4.22 | Sad Sam Jones | 109 | BOS |
| +007+ | 3.97 | George Mogridge | 85 | MIN |
| +013+ | 3.04 | Stan Coveleski | 110.7 | CLE |
| +014+ | 3 | Whitey Glazner | 76.7 | PIT |
| +015+ | 2.9 | Rube Benton | 49.3 | SFN |
| +017+ | 2.75 | Burleigh Grimes | 77 | LAN |
| +018+ | 2.72 | Eppa Rixey | 90.3 | CIN |
| +019+ | 2.56 | Jesse Barnes | 82.7 | SFN |
| +021+ | 2.43 | Fred Toney | 81.3 | SFN |
| +025+ | 2.23 | Dana Fillingim | 70.3 | ATL |
| +026+ | 2.22 | Earl Hamilton | 90.7 | PIT |
| +028+ | 1.88 | Dolf Luque | 101 | CIN |
| +030+ | 1.87 | Herb Pennock | 64.7 | BOS |
| +029+ | 1.87 | Hugh McQuillan | 91 | ATL |
| +036+ | 1.76 | Wilbur Cooper | 88 | PIT |
| +042+ | 1.65 | Jimmy Zinn | 46.7 | PIT |
| +043+ | 1.64 | Bill Pertica | 74 | SLN |
| +046+ | 1.6 | Dutch Ruether | 87 | LAN |
| +048+ | 1.52 | Red Causey | 41.7 | PHI |
| +051+ | 1.49 | Sherry Smith | 77 | LAN |
| XXXXX | 1.17 | Rube Marquard | 91.7 | CIN |
| XXXXX | 1.06 | Bob Shawkey | 43.7 | NYA |
| XXXXX | 0.96 | Phil Douglas | 46.7 | SFN |
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