| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 5.54 | 191304230_BOS_MIN |
| Vean Gregg | CLE | 5.26 | 191304240_CLE_DET |
| Nap Rucker | LAN | 4.49 | 191304230_LAN_ATL |
| Christy Mathewson | SFN | 3.98 | 191304230_PHI_SFN |
| Eddie Plank | OAK | 3.73 | 191304250_NYA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Tyler | ATL | -6.23 | 191304250_LAN_ATL |
| Ralph Works | CIN | -3.32 | 191304230_CHN_CIN |
| Bill Steele | SLN | -3.06 | 191304230_PIT_SLN |
| Roy Mitchell | BAL | -1.98 | 191304240_BAL_CHA |
| Bert Gallia | MIN | -0.43 | 191304250_BOS_MIN |
Based on accumulated WAA for this season up to 1913-04-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 1.66 | Walter Johnson | 28 | MIN |
| +002+ | 1.43 | Cy Falkenberg | 27 | CLE |
| +003+ | 1.42 | Vean Gregg | 36 | CLE |
| +004+ | 1.34 | Ray Keating | 25 | NYA |
| +005+ | 1.33 | Tom Seaton | 31 | PHI |
| XXXXX | 1.24 | Jim Scott | 24 | CHA |
| XXXXX | 1.24 | Jean Dubuc | 27 | DET |
| XXXXX | 1.23 | George Mullin | 36 | DET |
| XXXXX | 1.17 | Eddie Cicotte | 26 | CHA |
| XXXXX | 1.06 | Nap Rucker | 26 | LAN |
| XXXXX | 0.81 | Frank Allen | 28.7 | LAN |
| XXXXX | 0.79 | Eddie Plank | 24.3 | OAK |
| XXXXX | 0.75 | Dutch Leonard | 22.7 | BOS |
| XXXXX | 0.7 | Howie Camnitz | 22 | PIT |
| XXXXX | 0.69 | Doc White | 16 | CHA |
| XXXXX | 0.62 | Fred Blanding | 9 | CLE |
| XXXXX | 0.62 | Bill Steele | 9 | SLN |
| XXXXX | 0.61 | Pat Ragan | 19 | LAN |
| XXXXX | 0.59 | Eddie Stack | 9 | LAN |
| XXXXX | 0.58 | Babe Adams | 27 | PIT |
| XXXXX | 0.55 | Al Demaree | 19 | SFN |
| XXXXX | 0.55 | Pete Alexander | 11 | PHI |
| XXXXX | 0.54 | Pol Perritt | 14 | SLN |
| XXXXX | 0.5 | Carl Weilman | 35 | BAL |
| XXXXX | 0.49 | Red Ames | 26 | SFN |
_