| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 11 | 191305220_MIN_CLE |
| Eddie Plank | OAK | 4.7 | 191305220_OAK_DET |
| Buck O'Brien | BOS | 1.56 | 191305220_BOS_CHA |
| Babe Adams | PIT | 1.14 | 191305210_PIT_LAN |
| Joe Benz | CHA | 0.69 | 191305210_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Otto Hess | ATL | -2.88 | 191305210_CHN_ATL |
| Chief Johnson | CIN | -0.68 | 191305210_CIN_PHI |
| George Kahler | CLE | -0.53 | 191305210_MIN_CLE |
| Ed Reulbach | CHN | -0.37 | 191305210_CHN_ATL |
| Ed Klepfer | NYA | -0.37 | 191305220_NYA_BAL |
Based on accumulated WAA for this season up to 1913-05-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.09 | Walter Johnson | 78 | MIN |
| +002+ | 3.39 | Cy Falkenberg | 72 | CLE |
| +004+ | 2.78 | Ray Keating | 52.3 | NYA |
| +005+ | 2.6 | Nap Rucker | 71.7 | LAN |
| +008+ | 2.23 | Bill Steen | 70.3 | CLE |
| +009+ | 2.16 | Jim Scott | 64 | CHA |
| +010+ | 1.97 | Eddie Plank | 63.3 | OAK |
| +011+ | 1.97 | Pete Alexander | 54.7 | PHI |
| +014+ | 1.88 | Ad Brennan | 50 | PHI |
| +017+ | 1.76 | Larry Cheney | 71.7 | CHN |
| +018+ | 1.74 | Reb Russell | 70 | CHA |
| +019+ | 1.71 | Tom Seaton | 77.3 | PHI |
| +020+ | 1.68 | Eddie Cicotte | 42 | CHA |
| +026+ | 1.45 | Earl Hamilton | 68.3 | BAL |
| +025+ | 1.45 | Cliff Curtis | 45.7 | LAN |
| +027+ | 1.37 | Bill James | 60.3 | ATL |
| +030+ | 1.28 | Joe Benz | 45.3 | CHA |
| +032+ | 1.27 | Jean Dubuc | 64 | DET |
| XXXXX | 1.24 | Vean Gregg | 74.3 | CLE |
| XXXXX | 1.21 | Christy Mathewson | 72 | SFN |
| XXXXX | 0.97 | Dwight Stone | 46.7 | BAL |
| XXXXX | 0.86 | Roy Mitchell | 51 | BAL |
| XXXXX | 0.84 | George Baumgardner | 65.7 | BAL |
| XXXXX | 0.81 | Bob Harmon | 46.3 | SLN |
| XXXXX | 0.75 | Frank Allen | 63 | LAN |
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