| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nap Rucker | LAN | 4.62 | 191209281_PHI_LAN |
| Jeff Tesreau | SFN | 3.43 | 191209281_ATL_SFN |
| Pete Alexander | PHI | 2.65 | 191209300_PHI_SFN |
| Art Fromme | CIN | 2.51 | 191209300_CIN_SLN |
| Claude Hendrix | PIT | 2.39 | 191209300_PIT_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Russ Ford | NYA | -3.72 | 191209282_NYA_OAK |
| Ralph Works | CIN | -3.62 | 191209280_CIN_CHN |
| Joe Lake | DET | -2.76 | 191209290_DET_CLE |
| George Kahler | CLE | -1.8 | 191209280_DET_CLE |
| Boardwalk Brown | OAK | -1.75 | 191209281_NYA_OAK |
Based on accumulated WAA for this season up to 1912-09-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 14.5 | Walter Johnson | 360.3 | MIN |
| +003+ | 11.42 | Nap Rucker | 286.3 | LAN |
| +005+ | 10 | Jeff Tesreau | 231.7 | SFN |
| +006+ | 9.89 | Smoky Joe Wood | 336 | BOS |
| +009+ | 8.32 | Claude Hendrix | 288.3 | PIT |
| +010+ | 8.24 | Ed Walsh | 381.7 | CHA |
| +011+ | 8.11 | Pete Alexander | 310 | PHI |
| +013+ | 8.02 | Art Fromme | 290.7 | CIN |
| +014+ | 7.85 | Marty O'Toole | 271.3 | PIT |
| +018+ | 6.83 | Larry Cheney | 290.3 | CHN |
| +019+ | 6.65 | Howie Camnitz | 267.3 | PIT |
| +020+ | 6.55 | George Suggs | 290.7 | CIN |
| +021+ | 6.18 | Hank Robinson | 175 | PIT |
| +025+ | 5.89 | Rube Benton | 292.7 | CIN |
| +027+ | 5.72 | Eppa Rixey | 156 | PHI |
| +030+ | 5.29 | Lew Richie | 238.7 | CHN |
| +033+ | 4.93 | Eddie Plank | 259.7 | OAK |
| +035+ | 4.66 | Ray Collins | 191.3 | BOS |
| +038+ | 4.29 | Vean Gregg | 271 | CLE |
| +050+ | 3.01 | Tom Seaton | 245.3 | PHI |
| +058+ | 2.65 | Earl Moore | 182 | PHI |
| +061+ | 2.55 | Rube Geyer | 178.3 | SLN |
| +075+ | 1.88 | Buck O'Brien | 266.7 | BOS |
| +078+ | 1.72 | Eddie Stack | 138.7 | LAN |
| +079+ | 1.69 | Wilbur Cooper | 33 | PIT |
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