| 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 |
| Smoky Joe Wood | BOS | 2.04 | 191206292_NYA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Steele | SLN | -3.17 | 191206290_SLN_CIN |
| Jack Quinn | NYA | -3.09 | 191206291_NYA_BOS |
| Willie Mitchell | CLE | -1.5 | 191206301_CLE_BAL |
| Elmer Knetzer | LAN | -0.69 | 191207011_LAN_PHI |
| Tex Covington | DET | -0.62 | 191206301_CHA_DET |
Based on accumulated WAA for this season up to 1912-07-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.62 | Rube Marquard | 151.3 | SFN |
| +002+ | 8.58 | Walter Johnson | 162.3 | MIN |
| +003+ | 5.77 | Marty O'Toole | 134 | PIT |
| +004+ | 5.7 | Slim Sallee | 148 | SLN |
| +006+ | 5.18 | Christy Mathewson | 124.7 | SFN |
| +007+ | 5.15 | Ed Walsh | 176.7 | CHA |
| +009+ | 4.87 | Larry Cheney | 145.7 | CHN |
| +010+ | 4.55 | Nap Rucker | 122 | LAN |
| +011+ | 4.46 | George Suggs | 122.7 | CIN |
| +012+ | 4.37 | Rube Benton | 141 | CIN |
| +016+ | 3.87 | Jimmy Lavender | 96.3 | CHN |
| +019+ | 3.48 | Joe Benz | 115.3 | CHA |
| +020+ | 3.4 | Smoky Joe Wood | 165.3 | BOS |
| +021+ | 3.34 | Charley Hall | 114 | BOS |
| +022+ | 3.23 | Hooks Wiltse | 70 | SFN |
| +023+ | 3.21 | Lew Richie | 91.7 | CHN |
| +030+ | 2.44 | Chief Bender | 94.3 | OAK |
| +032+ | 2.39 | Howie Camnitz | 123 | PIT |
| +034+ | 2.25 | Eddie Plank | 115.7 | OAK |
| +041+ | 1.97 | Pete Alexander | 121.7 | PHI |
| +040+ | 1.97 | Jack Coombs | 115 | OAK |
| +044+ | 1.9 | Cliff Curtis | 48 | PHI |
| +050+ | 1.75 | Bert Humphries | 75.7 | CIN |
| +051+ | 1.73 | Hugh Bedient | 83 | BOS |
| +055+ | 1.69 | Rube Geyer | 64.3 | SLN |
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