| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 14.82 | 191308020_DET_MIN |
| Jim Scott | CHA | 5.44 | 191308020_CHA_NYA |
| Ad Brennan | PHI | 1.71 | 191308030_PHI_SLN |
| Vean Gregg | CLE | 1.47 | 191308021_CLE_BOS |
| Earl Hamilton | BAL | 0.54 | 191308020_BAL_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jimmy Lavender | CHN | -2.55 | 191308030_LAN_CHN |
| Howie Camnitz | PIT | -1.49 | 191308040_SFN_PIT |
| Bob Harmon | SLN | -1.12 | 191308020_ATL_SLN |
| Ed Willett | DET | -0.57 | 191308040_DET_NYA |
| Lefty Tyler | ATL | -0.55 | 191308020_ATL_SLN |
Based on accumulated WAA for this season up to 1913-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.44 | Walter Johnson | 228.3 | MIN |
| +002+ | 7.1 | Jim Scott | 203.7 | CHA |
| +003+ | 6.27 | Eddie Cicotte | 169.3 | CHA |
| +005+ | 5.57 | Christy Mathewson | 215.7 | SFN |
| +008+ | 5.12 | Ad Brennan | 157.7 | PHI |
| +009+ | 5.1 | Reb Russell | 222.3 | CHA |
| +012+ | 4.8 | Willie Mitchell | 185 | CLE |
| +015+ | 3.86 | Chief Bender | 162.7 | OAK |
| +016+ | 3.48 | Eddie Plank | 188.7 | OAK |
| +018+ | 3.23 | Cy Falkenberg | 195.3 | CLE |
| +019+ | 3.04 | Earl Hamilton | 207 | BAL |
| +022+ | 2.94 | Tom Seaton | 198.7 | PHI |
| +024+ | 2.88 | Babe Adams | 206.7 | PIT |
| +026+ | 2.85 | Rube Marquard | 179.7 | SFN |
| +027+ | 2.81 | Joe Boehling | 128.7 | MIN |
| +028+ | 2.8 | Vean Gregg | 192.3 | CLE |
| +031+ | 2.47 | Al Demaree | 132 | SFN |
| +035+ | 2.33 | Jeff Tesreau | 187.3 | SFN |
| +038+ | 2.24 | Pete Alexander | 188.7 | PHI |
| +044+ | 2.02 | Dutch Leonard | 153 | BOS |
| +045+ | 2.01 | Frank Allen | 129.3 | LAN |
| +050+ | 1.92 | Fred Blanding | 124 | CLE |
| +053+ | 1.88 | Ray Fisher | 175 | NYA |
| +055+ | 1.87 | Bert Humphries | 119.3 | CHN |
| +058+ | 1.75 | Ray Caldwell | 38.3 | NYA |
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