| Starter | Tm | Tier | Game |
|---|---|---|---|
| Edinson Volquez | LAN | -8.81 | 201309040_LAN_COL |
| Jeremy Hellickson | TBA | -4.18 | 201309040_TBA_ANA |
| CC Sabathia | NYA | -3.54 | 201309040_CHA_NYA |
| Roy Halladay | PHI | -3.45 | 201309040_WAS_PHI |
| Joe Saunders | SEA | -3.02 | 201309050_SEA_KCA |
Based on accumulated WAA for this season up to 2013-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.72 | Clayton Kershaw | 209 | LAN |
| +017+ | 4.34 | Max Scherzer | 190.3 | DET |
| +023+ | 4.25 | Madison Bumgarner | 182.3 | SFN |
| +025+ | 4.18 | Anibal Sanchez | 151.3 | DET |
| +026+ | 4.16 | Hisashi Iwakuma | 191 | SEA |
| +028+ | 4.1 | Yu Darvish | 179.7 | TEX |
| +036+ | 3.99 | Stephen Strasburg | 164 | WAS |
| +037+ | 3.98 | Chris Sale | 187.7 | CHA |
| +038+ | 3.97 | James Shields | 196 | KCA |
| +042+ | 3.89 | Mat Latos | 184 | CIN |
| +044+ | 3.83 | Felix Hernandez | 194.3 | SEA |
| +045+ | 3.82 | Zack Greinke | 148.7 | LAN |
| +046+ | 3.8 | Hiroki Kuroda | 177.7 | NYA |
| +047+ | 3.77 | Bartolo Colon | 164.3 | OAK |
| +051+ | 3.62 | Adam Wainwright | 206.7 | SLN |
| +053+ | 3.55 | Cliff Lee | 183.7 | PHI |
| +054+ | 3.5 | Derek Holland | 184.7 | TEX |
| +055+ | 3.46 | Patrick Corbin | 182.7 | ARI |
| +061+ | 3.24 | Mike Minor | 172.7 | ATL |
| +064+ | 3.2 | Jhoulys Chacin | 176.3 | COL |
| +074+ | 2.96 | Travis Wood | 179 | CHN |
| +079+ | 2.75 | John Lackey | 162.3 | BOS |
| +081+ | 2.74 | A.J. Burnett | 160 | PIT |
| +084+ | 2.69 | Francisco Liriano | 136 | PIT |
| +090+ | 2.58 | Ricky Nolasco | 179.7 | TOT |
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