| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Faber | CHA | 4.95 | 192106250_DET_CHA |
| Wilbur Cooper | PIT | 4.14 | 192106252_PIT_SLN |
| Pete Alexander | CHN | 3.85 | 192106260_PIT_CHN |
| Dolf Luque | CIN | 3.02 | 192106250_CHN_CIN |
| Burleigh Grimes | LAN | 2.62 | 192106270_ATL_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rollie Naylor | OAK | -2.11 | 192106251_OAK_BOS |
| Howard Ehmke | DET | -1.91 | 192106250_DET_CHA |
| Waite Hoyt | NYA | -0.92 | 192106260_MIN_NYA |
| Bill Hubbell | PHI | -0.64 | 192106270_SFN_PHI |
| Emilio Palmero | BAL | -0.59 | 192106260_BAL_CLE |
Based on accumulated WAA for this season up to 1921-06-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 5.82 | Carl Mays | 143.7 | NYA |
| +006+ | 5.41 | Red Faber | 154.3 | CHA |
| +007+ | 5.33 | Eppa Rixey | 129.3 | CIN |
| +009+ | 4.37 | Burleigh Grimes | 106 | LAN |
| +010+ | 4.2 | George Mogridge | 120 | MIN |
| +015+ | 3.42 | Herb Pennock | 101.7 | BOS |
| +018+ | 3.29 | Whitey Glazner | 104.7 | PIT |
| +019+ | 3.21 | Wilbur Cooper | 133 | PIT |
| +022+ | 3.04 | Stan Coveleski | 144.3 | CLE |
| +023+ | 2.93 | Dana Fillingim | 98.3 | ATL |
| +025+ | 2.82 | Bill Piercy | 63.3 | NYA |
| +024+ | 2.82 | Dolf Luque | 133.7 | CIN |
| +028+ | 2.53 | Fred Toney | 107.7 | SFN |
| +039+ | 1.98 | Rube Benton | 63.3 | SFN |
| +042+ | 1.81 | Red Causey | 49.7 | PHI |
| +049+ | 1.64 | Allen Russell | 81.7 | BOS |
| +054+ | 1.58 | Rube Marquard | 114.7 | CIN |
| +060+ | 1.5 | Bullet Joe Bush | 74 | BOS |
| +062+ | 1.42 | Hugh McQuillan | 122 | ATL |
| +064+ | 1.36 | Babe Adams | 77.3 | PIT |
| +067+ | 1.32 | Elam Vangilder | 45.3 | BAL |
| +066+ | 1.32 | Roy Walker | 74 | SLN |
| XXXXX | 1.2 | Jesse Haines | 113.7 | SLN |
| XXXXX | 1.06 | Bob Shawkey | 77.7 | NYA |
| XXXXX | 1.06 | Sherry Smith | 100 | LAN |
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