| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pete Alexander | CHN | 10.15 | 192009201_CHN_ATL |
| Babe Adams | PIT | 3.35 | 192009221_CIN_PIT |
| Stan Coveleski | CLE | 3.3 | 192009210_BOS_CLE |
| Dutch Ruether | CIN | 2.37 | 192009222_CIN_PIT |
| Bob Shawkey | NYA | 2.04 | 192009210_NYA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bullet Joe Bush | BOS | -2.53 | 192009200_BOS_CLE |
| Carl Weilman | BAL | -1.35 | 192009200_NYA_BAL |
| Red Causey | PHI | -1.34 | 192009220_SLN_PHI |
| Eric Erickson | MIN | -0.94 | 192009210_MIN_DET |
| Doc Ayers | DET | -0.91 | 192009200_MIN_DET |
Based on accumulated WAA for this season up to 1920-09-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.44 | Pete Alexander | 337.3 | CHN |
| +006+ | 8.92 | Burleigh Grimes | 292.7 | LAN |
| +007+ | 7.58 | Babe Adams | 258 | PIT |
| +011+ | 7.23 | Wilbur Cooper | 306.7 | PIT |
| +013+ | 6.93 | Stan Coveleski | 299.3 | CLE |
| +014+ | 5.87 | Dutch Ruether | 265.7 | CIN |
| +018+ | 5.59 | Bob Shawkey | 249.7 | NYA |
| +020+ | 5.51 | Hippo Vaughn | 285 | CHN |
| +022+ | 5.12 | Fred Toney | 271 | SFN |
| +023+ | 5.06 | Bill Doak | 263 | SLN |
| +025+ | 4.8 | Sherry Smith | 130.7 | LAN |
| +026+ | 4.54 | Leon Cadore | 250.3 | LAN |
| +030+ | 4.28 | Dolf Luque | 206.3 | CIN |
| +032+ | 4.16 | Jesse Barnes | 280 | SFN |
| +033+ | 4.11 | Red Faber | 308 | CHA |
| +037+ | 3.8 | Phil Douglas | 214.7 | SFN |
| +038+ | 3.7 | Jim Bagby | 308.7 | CLE |
| +041+ | 3.23 | Elmer Ponder | 187 | PIT |
| +051+ | 2.51 | Carl Mays | 294 | NYA |
| +052+ | 2.47 | Dixie Davis | 245 | BAL |
| +054+ | 2.41 | Dana Fillingim | 255 | ATL |
| +056+ | 2.36 | Eddie Rommel | 163 | OAK |
| +057+ | 2.35 | Ray Fisher | 184.7 | CIN |
| +058+ | 2.31 | Lee Meadows | 225.7 | PHI |
| +059+ | 2.29 | Jack Quinn | 245.3 | NYA |
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