| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 8.38 | 192107042_OAK_NYA |
| Jesse Barnes | SFN | 7.4 | 192107032_ATL_SFN |
| Wilbur Cooper | PIT | 3.91 | 192107042_SLN_PIT |
| Burleigh Grimes | LAN | 3.38 | 192107022_LAN_PHI |
| Red Faber | CHA | 3.36 | 192107030_CHA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rollie Naylor | OAK | -2.23 | 192107020_OAK_MIN |
| Howard Ehmke | DET | -1.92 | 192107020_DET_CLE |
| Dickey Kerr | CHA | -1.79 | 192107042_CHA_CLE |
| Bill Bayne | BAL | -1.75 | 192107021_CHA_BAL |
| Harry Courtney | MIN | -1.22 | 192107020_OAK_MIN |
Based on accumulated WAA for this season up to 1921-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.29 | Carl Mays | 162.7 | NYA |
| +005+ | 6.16 | Red Faber | 172.7 | CHA |
| +007+ | 5.94 | Eppa Rixey | 135.3 | CIN |
| +008+ | 5.24 | George Mogridge | 132 | MIN |
| +010+ | 4.55 | Burleigh Grimes | 115 | LAN |
| +011+ | 4.37 | Jesse Barnes | 120.7 | SFN |
| +017+ | 3.61 | Whitey Glazner | 119 | PIT |
| +020+ | 3.49 | Wilbur Cooper | 149 | PIT |
| +022+ | 2.9 | Dolf Luque | 149.3 | CIN |
| +024+ | 2.77 | Bill Piercy | 63.3 | NYA |
| +025+ | 2.74 | Stan Coveleski | 161.7 | CLE |
| +026+ | 2.63 | Fred Toney | 115.7 | SFN |
| +029+ | 2.44 | Rube Marquard | 129.7 | CIN |
| +030+ | 2.41 | Sad Sam Jones | 138.3 | BOS |
| +032+ | 2.39 | Bill Doak | 87.3 | SLN |
| +035+ | 2.23 | Babe Adams | 86.3 | PIT |
| +036+ | 2.22 | Herb Pennock | 104.7 | BOS |
| +037+ | 2.15 | Dana Fillingim | 103.7 | ATL |
| +038+ | 2.14 | Hugh McQuillan | 130 | ATL |
| +042+ | 2.05 | Earl Hamilton | 124.7 | PIT |
| +044+ | 1.99 | Elam Vangilder | 63.3 | BAL |
| +056+ | 1.56 | Allen Russell | 89.7 | BOS |
| +062+ | 1.5 | Johnny Miljus | 48.3 | LAN |
| +063+ | 1.49 | Bob Shawkey | 95.7 | NYA |
| +067+ | 1.46 | Roy Moore | 91 | OAK |
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