| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 10.21 | 191206290_OAK_MIN |
| Rube Marquard | SFN | 5.98 | 191206290_ATL_SFN |
| Ed Walsh | CHA | 3.8 | 191206301_CHA_DET |
| Slim Sallee | SLN | 2.93 | 191206300_SLN_CIN |
| Chief Bender | OAK | 2.32 | 191206281_OAK_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Steele | SLN | -3.17 | 191206290_SLN_CIN |
| Jack Quinn | NYA | -3.09 | 191206291_NYA_BOS |
| Earl Hamilton | BAL | -2.83 | 191206280_CLE_BAL |
| Hippo Vaughn | MIN | -2.09 | 191206281_OAK_MIN |
| Willie Mitchell | CLE | -1.5 | 191206301_CLE_BAL |
Based on accumulated WAA for this season up to 1912-06-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.61 | Rube Marquard | 151.3 | SFN |
| +002+ | 8.58 | Walter Johnson | 162.3 | MIN |
| +003+ | 5.67 | Slim Sallee | 148 | SLN |
| +004+ | 5.18 | Christy Mathewson | 124.7 | SFN |
| +005+ | 5.14 | Ed Walsh | 176.7 | CHA |
| +007+ | 4.94 | Larry Cheney | 145.7 | CHN |
| +009+ | 4.87 | Marty O'Toole | 122 | PIT |
| +010+ | 4.72 | Rube Benton | 136 | CIN |
| +011+ | 4.54 | Nap Rucker | 122 | LAN |
| +012+ | 4.46 | George Suggs | 122.7 | CIN |
| +017+ | 3.47 | Joe Benz | 115.3 | CHA |
| +018+ | 3.4 | Smoky Joe Wood | 165.3 | BOS |
| +019+ | 3.28 | Red Ames | 85.7 | SFN |
| +020+ | 3.25 | Lew Richie | 91.7 | CHN |
| +021+ | 3.23 | Hooks Wiltse | 70 | SFN |
| +024+ | 2.82 | Ad Brennan | 111.3 | PHI |
| +025+ | 2.75 | Jimmy Lavender | 84.3 | CHN |
| +026+ | 2.66 | Charley Hall | 105 | BOS |
| +028+ | 2.45 | Howie Camnitz | 123 | PIT |
| +029+ | 2.44 | Chief Bender | 94.3 | OAK |
| +035+ | 2.24 | Eddie Plank | 115.7 | OAK |
| +044+ | 1.97 | Jack Coombs | 115 | OAK |
| +043+ | 1.97 | Pete Alexander | 121.7 | PHI |
| +047+ | 1.9 | Cliff Curtis | 48 | PHI |
| +050+ | 1.81 | Rube Geyer | 61.3 | SLN |
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