| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pete Alexander | CHN | 10.16 | 192009251_CHN_CIN |
| Burleigh Grimes | LAN | 5.86 | 192009250_SFN_LAN |
| Babe Adams | PIT | 3.96 | 192009260_PIT_CIN |
| Stan Coveleski | CLE | 3.31 | 192009250_CHA_CLE |
| Bob Shawkey | NYA | 1.99 | 192009250_MIN_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Harry Courtney | MIN | -3.7 | 192009250_MIN_NYA |
| Bullet Joe Bush | BOS | -3.22 | 192009250_OAK_BOS |
| Speed Martin | CHN | -2.54 | 192009270_SLN_CHN |
| Lefty Williams | CHA | -1.99 | 192009250_CHA_CLE |
| Red Causey | PHI | -1.25 | 192009252_ATL_PHI |
Based on accumulated WAA for this season up to 1920-09-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 12.11 | Pete Alexander | 346.3 | CHN |
| +006+ | 8.09 | Burleigh Grimes | 298.7 | LAN |
| +007+ | 7.86 | Wilbur Cooper | 315.7 | PIT |
| +011+ | 7.34 | Babe Adams | 261 | PIT |
| +013+ | 6.78 | Stan Coveleski | 306 | CLE |
| +015+ | 5.98 | Hippo Vaughn | 294 | CHN |
| +014+ | 5.98 | Bob Shawkey | 257.7 | NYA |
| +018+ | 5.85 | Dutch Ruether | 265.7 | CIN |
| +022+ | 5.35 | Bill Doak | 270 | SLN |
| +023+ | 5.05 | Fred Toney | 273 | SFN |
| +025+ | 4.85 | Jesse Barnes | 289 | SFN |
| +026+ | 4.79 | Sherry Smith | 130.7 | LAN |
| +027+ | 4.51 | Leon Cadore | 250.3 | LAN |
| +030+ | 4.32 | Jim Bagby | 319.7 | CLE |
| +031+ | 4.3 | Red Faber | 316 | CHA |
| +036+ | 3.76 | Phil Douglas | 219.7 | SFN |
| +039+ | 3.47 | Elmer Ponder | 196 | PIT |
| +042+ | 3.29 | Carl Mays | 312 | NYA |
| +048+ | 2.84 | Ray Fisher | 193.7 | CIN |
| +050+ | 2.79 | Lee Meadows | 234.7 | PHI |
| +053+ | 2.61 | Eddie Rommel | 174 | OAK |
| +060+ | 2.38 | Buddy Napier | 43 | CIN |
| +061+ | 2.37 | Dixie Davis | 259.7 | BAL |
| +062+ | 2.21 | Dana Fillingim | 262.3 | ATL |
| +065+ | 2.06 | Art Nehf | 280.3 | SFN |
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