| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 7.99 | 192107210_NYA_CLE |
| Red Faber | CHA | 7.06 | 192107210_OAK_CHA |
| Eppa Rixey | CIN | 4.69 | 192107200_CIN_SFN |
| Pete Alexander | CHN | 3.15 | 192107201_CHN_PHI |
| Babe Adams | PIT | 2.3 | 192107190_PIT_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Wilkinson | CHA | -4.61 | 192107200_OAK_CHA |
| Ray Caldwell | CLE | -2.57 | 192107210_NYA_CLE |
| Eric Erickson | MIN | -0.94 | 192107190_MIN_CLE |
| Rollie Naylor | OAK | -0.86 | 192107210_OAK_CHA |
| Bill Hubbell | PHI | -0.86 | 192107202_CHN_PHI |
Based on accumulated WAA for this season up to 1921-07-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.58 | Red Faber | 223.7 | CHA |
| +003+ | 7.91 | Eppa Rixey | 171 | CIN |
| +008+ | 5.76 | George Mogridge | 168.7 | MIN |
| +009+ | 5.57 | Carl Mays | 192.7 | NYA |
| +013+ | 4.57 | Jesse Barnes | 143.7 | SFN |
| +018+ | 3.76 | Bill Doak | 114.7 | SLN |
| +019+ | 3.75 | Burleigh Grimes | 157 | LAN |
| +023+ | 3.36 | Pete Alexander | 120 | CHN |
| +024+ | 3.25 | Sad Sam Jones | 175 | BOS |
| +026+ | 3.22 | Wilbur Cooper | 181 | PIT |
| +028+ | 2.73 | Joe Oeschger | 168 | ATL |
| +029+ | 2.7 | Babe Adams | 102.3 | PIT |
| +030+ | 2.67 | Hugh McQuillan | 154 | ATL |
| +032+ | 2.57 | Herb Pennock | 131 | BOS |
| +034+ | 2.51 | Bullet Joe Bush | 121.7 | BOS |
| +036+ | 2.39 | Dana Fillingim | 126.3 | ATL |
| +037+ | 2.36 | Bob Shawkey | 129.7 | NYA |
| +038+ | 2.34 | Waite Hoyt | 151.7 | NYA |
| +041+ | 2.23 | Elmer Ponder | 48.7 | TOT |
| +050+ | 2.07 | Stan Coveleski | 195.7 | CLE |
| +053+ | 2.02 | Fred Toney | 136.7 | SFN |
| +058+ | 1.8 | Allen Russell | 118.7 | BOS |
| +064+ | 1.63 | Earl Hamilton | 136.3 | PIT |
| +076+ | 1.32 | Slim Harriss | 154.7 | OAK |
| +075+ | 1.32 | Rosy Ryan | 102.7 | SFN |
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