| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walter Johnson | MIN | 5.54 | 191304230_BOS_MIN |
| Nap Rucker | LAN | 4.49 | 191304230_LAN_ATL |
| Christy Mathewson | SFN | 3.98 | 191304230_PHI_SFN |
| Smoky Joe Wood | BOS | 3.23 | 191304210_BOS_OAK |
| Babe Adams | PIT | 1.64 | 191304210_PIT_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Tyler | ATL | -6.4 | 191304210_SFN_ATL |
| Ralph Works | CIN | -3.32 | 191304230_CHN_CIN |
| Bill Steele | SLN | -3.06 | 191304230_PIT_SLN |
| Roy Mitchell | BAL | -1.03 | 191304210_BAL_CLE |
| Cliff Curtis | LAN | -0.74 | 191304220_LAN_ATL |
Based on accumulated WAA for this season up to 1913-04-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 1.64 | Walter Johnson | 27 | MIN |
| +002+ | 1.53 | Tom Seaton | 31 | PHI |
| +004+ | 1.49 | Vean Gregg | 27 | CLE |
| +003+ | 1.49 | Cy Falkenberg | 27 | CLE |
| +005+ | 1.36 | Ray Keating | 25 | NYA |
| +006+ | 1.29 | Jim Scott | 24 | CHA |
| XXXXX | 1.16 | Nap Rucker | 26 | LAN |
| XXXXX | 1.09 | George Mullin | 27 | DET |
| XXXXX | 0.86 | Jean Dubuc | 18 | DET |
| XXXXX | 0.79 | Dutch Leonard | 22.7 | BOS |
| XXXXX | 0.72 | Doc White | 16 | CHA |
| XXXXX | 0.72 | Howie Camnitz | 22 | PIT |
| XXXXX | 0.67 | Pat Ragan | 19 | LAN |
| XXXXX | 0.63 | Bill Steele | 9 | SLN |
| XXXXX | 0.61 | Babe Adams | 27 | PIT |
| XXXXX | 0.57 | Carl Weilman | 35 | BAL |
| XXXXX | 0.56 | Pol Perritt | 14 | SLN |
| XXXXX | 0.51 | Marc Hall | 19 | DET |
| XXXXX | 0.48 | Cliff Curtis | 10 | LAN |
| XXXXX | 0.46 | Christy Mathewson | 19 | SFN |
| XXXXX | 0.43 | Reb Russell | 12 | CHA |
| XXXXX | 0.43 | Hub Perdue | 25 | ATL |
| XXXXX | 0.41 | Willie Mitchell | 20.7 | CLE |
| XXXXX | 0.37 | George Pierce | 6 | CHN |
| XXXXX | 0.35 | Red Ames | 17 | SFN |
_