| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Scott | CHA | 5.37 | 191307291_CHA_BOS |
| Christy Mathewson | SFN | 3.94 | 191307280_SFN_SLN |
| Ad Brennan | PHI | 1.82 | 191307300_PHI_CIN |
| Willie Mitchell | CLE | 1.42 | 191307292_CLE_NYA |
| Joe Boehling | MIN | 0.37 | 191307280_BAL_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Harmon | SLN | -1.24 | 191307300_ATL_SLN |
| Chief Johnson | CIN | -1 | 191307290_LAN_CIN |
| Bullet Joe Bush | OAK | -0.98 | 191307300_BAL_OAK |
| Howie Camnitz | PIT | -0.85 | 191307280_PHI_PIT |
| Al Schulz | NYA | -0.79 | 191307292_CLE_NYA |
Based on accumulated WAA for this season up to 1913-07-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.04 | Walter Johnson | 219.3 | MIN |
| +002+ | 6.6 | Jim Scott | 193.7 | CHA |
| +003+ | 6.02 | Eddie Cicotte | 157 | CHA |
| +004+ | 5.43 | Reb Russell | 220.7 | CHA |
| +006+ | 5.15 | Christy Mathewson | 206.7 | SFN |
| +011+ | 4.91 | Ad Brennan | 148.7 | PHI |
| +012+ | 4.16 | Willie Mitchell | 176 | CLE |
| +015+ | 3.77 | Cy Falkenberg | 185.3 | CLE |
| +016+ | 3.66 | Eddie Plank | 179.7 | OAK |
| +017+ | 3.56 | Chief Bender | 155.7 | OAK |
| +018+ | 3.22 | Earl Hamilton | 198 | BAL |
| +019+ | 3.08 | Tom Seaton | 191.7 | PHI |
| +024+ | 2.8 | Joe Boehling | 119.7 | MIN |
| +026+ | 2.67 | Rube Marquard | 171 | SFN |
| +027+ | 2.63 | Babe Adams | 196.7 | PIT |
| +031+ | 2.46 | Dutch Leonard | 150 | BOS |
| +032+ | 2.44 | Vean Gregg | 181.3 | CLE |
| +039+ | 2.15 | Al Demaree | 124.3 | SFN |
| +042+ | 2.1 | Ray Fisher | 166 | NYA |
| +046+ | 1.94 | Bert Humphries | 111.3 | CHN |
| +048+ | 1.92 | Jeff Tesreau | 178.3 | SFN |
| +053+ | 1.82 | Pete Alexander | 179.7 | PHI |
| +056+ | 1.7 | Fred Blanding | 115 | CLE |
| +062+ | 1.56 | George Baumgardner | 157.7 | BAL |
| +071+ | 1.31 | Russ Ford | 146.7 | NYA |
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