| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Mays | NYA | 5.9 | 192107130_NYA_BAL |
| Red Faber | CHA | 5.08 | 192107140_MIN_CHA |
| Jesse Barnes | SFN | 4.8 | 192107120_SLN_SFN |
| Wilbur Cooper | PIT | 3.04 | 192107120_PIT_PHI |
| Pete Alexander | CHN | 2.85 | 192107120_CHN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shovel Hodge | CHA | -5.51 | 192107130_MIN_CHA |
| Stan Baumgartner | PHI | -2.77 | 192107120_PIT_PHI |
| Ray Caldwell | CLE | -2.25 | 192107122_BOS_CLE |
| Jim Shaw | MIN | -1.73 | 192107130_MIN_CHA |
| Rollie Naylor | OAK | -1.67 | 192107120_OAK_DET |
Based on accumulated WAA for this season up to 1921-07-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.01 | Red Faber | 199.7 | CHA |
| +005+ | 6.78 | Eppa Rixey | 153 | CIN |
| +007+ | 6.08 | Carl Mays | 180.7 | NYA |
| +009+ | 5.35 | George Mogridge | 160.7 | MIN |
| +013+ | 4.4 | Jesse Barnes | 135.7 | SFN |
| +014+ | 4.11 | Whitey Glazner | 128 | PIT |
| +015+ | 3.99 | Burleigh Grimes | 139 | LAN |
| +018+ | 3.74 | Wilbur Cooper | 167 | PIT |
| +021+ | 3.61 | Sad Sam Jones | 165.3 | BOS |
| +025+ | 3.06 | Stan Coveleski | 179.7 | CLE |
| +026+ | 2.98 | Herb Pennock | 120.3 | BOS |
| +027+ | 2.94 | Bill Doak | 98.3 | SLN |
| +029+ | 2.73 | Dana Fillingim | 117.3 | ATL |
| +030+ | 2.42 | Rosy Ryan | 99.7 | SFN |
| +031+ | 2.42 | Joe Oeschger | 151.7 | ATL |
| +032+ | 2.39 | Allen Russell | 110 | BOS |
| +033+ | 2.32 | Hugh McQuillan | 144 | ATL |
| +037+ | 2.25 | Bill Piercy | 63.3 | NYA |
| +038+ | 2.21 | Pete Alexander | 102 | CHN |
| +039+ | 2.2 | Dolf Luque | 162 | CIN |
| +042+ | 2.15 | Babe Adams | 93.3 | PIT |
| +050+ | 1.84 | Fred Toney | 128.7 | SFN |
| +054+ | 1.75 | Johnny Morrison | 46 | PIT |
| +059+ | 1.67 | Rube Marquard | 143.7 | CIN |
| +063+ | 1.6 | Red Causey | 50.7 | PHI |
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