| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 8.5 | 192106292_BOS_NYA |
| Red Faber | CHA | 4.75 | 192106290_CHA_BAL |
| Wilbur Cooper | PIT | 3.89 | 192106290_PIT_CHN |
| Fred Toney | SFN | 3.76 | 192106290_SFN_ATL |
| Dolf Luque | CIN | 2.44 | 192106300_CIN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Wilkinson | CHA | -2.1 | 192106302_CHA_BAL |
| Bob Hasty | OAK | -1.98 | 192107012_OAK_MIN |
| Emilio Palmero | BAL | -1.43 | 192107010_CHA_BAL |
| Dutch Leonard | DET | -1.18 | 192106290_DET_CLE |
| Tom Zachary | MIN | -0.45 | 192106290_OAK_MIN |
Based on accumulated WAA for this season up to 1921-07-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.2 | Carl Mays | 153.7 | NYA |
| +005+ | 5.85 | Eppa Rixey | 135.3 | CIN |
| +007+ | 5.36 | Red Faber | 163.7 | CHA |
| +008+ | 5.17 | George Mogridge | 132 | MIN |
| +011+ | 4.27 | Burleigh Grimes | 106 | LAN |
| +012+ | 3.78 | Wilbur Cooper | 142 | PIT |
| +021+ | 3.11 | Whitey Glazner | 110 | PIT |
| +022+ | 2.96 | Earl Hamilton | 119.7 | PIT |
| +023+ | 2.92 | Stan Coveleski | 153.3 | CLE |
| +024+ | 2.83 | Dana Fillingim | 98.3 | ATL |
| +025+ | 2.74 | Bill Piercy | 63.3 | NYA |
| +026+ | 2.58 | Fred Toney | 115.7 | SFN |
| +029+ | 2.34 | Dolf Luque | 140.3 | CIN |
| +037+ | 2.15 | Herb Pennock | 104.7 | BOS |
| +042+ | 1.93 | Elam Vangilder | 54.3 | BAL |
| +043+ | 1.93 | Rube Benton | 63.3 | SFN |
| +044+ | 1.9 | Rube Marquard | 120.7 | CIN |
| +045+ | 1.89 | Bill Doak | 78.3 | SLN |
| +053+ | 1.56 | Allen Russell | 81.7 | BOS |
| +059+ | 1.44 | Johnny Morrison | 29 | PIT |
| +061+ | 1.42 | Bob Shawkey | 86.7 | NYA |
| +063+ | 1.39 | Roy Moore | 91 | OAK |
| +068+ | 1.31 | Dave Keefe | 94.7 | OAK |
| +067+ | 1.31 | Joe Oeschger | 124.3 | ATL |
| +069+ | 1.3 | Hugh McQuillan | 122 | ATL |
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