| Starter | Tm | Tier | Game |
|---|---|---|---|
| Burleigh Grimes | LAN | 3.38 | 192107022_LAN_PHI |
| Babe Adams | PIT | 2.84 | 192107020_CIN_PIT |
| Dolf Luque | CIN | 2.44 | 192106300_CIN_PIT |
| Pete Alexander | CHN | 2.4 | 192107010_SLN_CHN |
| Bill Doak | SLN | 1.37 | 192107020_SLN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rollie Naylor | OAK | -2.23 | 192107020_OAK_MIN |
| Roy Wilkinson | CHA | -2.1 | 192106302_CHA_BAL |
| Howard Ehmke | DET | -1.92 | 192107020_DET_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 1921-07-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.21 | Carl Mays | 153.7 | NYA |
| +005+ | 5.88 | Eppa Rixey | 135.3 | CIN |
| +007+ | 5.39 | Red Faber | 163.7 | CHA |
| +008+ | 5.18 | George Mogridge | 132 | MIN |
| +011+ | 4.51 | Burleigh Grimes | 115 | LAN |
| +012+ | 3.8 | Wilbur Cooper | 142 | PIT |
| +021+ | 3.12 | Whitey Glazner | 110 | PIT |
| +023+ | 2.93 | Stan Coveleski | 153.3 | CLE |
| +024+ | 2.84 | Dana Fillingim | 98.3 | ATL |
| +025+ | 2.75 | Bill Piercy | 63.3 | NYA |
| +026+ | 2.59 | Fred Toney | 115.7 | SFN |
| +029+ | 2.37 | Dolf Luque | 140.3 | CIN |
| +030+ | 2.35 | Bill Doak | 87.3 | SLN |
| +035+ | 2.19 | Herb Pennock | 104.7 | BOS |
| +037+ | 2.18 | Babe Adams | 86.3 | PIT |
| +041+ | 1.94 | Elam Vangilder | 54.3 | BAL |
| +043+ | 1.93 | Rube Benton | 63.3 | SFN |
| +044+ | 1.92 | Rube Marquard | 120.7 | CIN |
| +056+ | 1.54 | Allen Russell | 89.7 | BOS |
| +059+ | 1.45 | Johnny Morrison | 29 | PIT |
| +060+ | 1.43 | Bob Shawkey | 86.7 | NYA |
| +062+ | 1.4 | Roy Moore | 91 | OAK |
| +067+ | 1.32 | Dave Keefe | 94.7 | OAK |
| +066+ | 1.32 | Joe Oeschger | 124.3 | ATL |
| +068+ | 1.31 | Hugh McQuillan | 122 | ATL |
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