| Starter | Tm | Tier | Game |
|---|---|---|---|
| Brandon Maurer | SEA | -4.85 | 201309170_SEA_DET |
| Aaron Harang | NYN | -4.38 | 201309180_SFN_NYN |
| Mike Pelfrey | MIN | -3.48 | 201309170_MIN_CHA |
| Roy Halladay | PHI | -2.98 | 201309170_MIA_PHI |
| Jeremy Hellickson | TBA | -2.93 | 201309170_TEX_TBA |
Based on accumulated WAA for this season up to 2013-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 5.44 | Anibal Sanchez | 172 | DET |
| +015+ | 5.42 | Hisashi Iwakuma | 211.7 | SEA |
| +019+ | 5.28 | Madison Bumgarner | 201.3 | SFN |
| +020+ | 5.26 | Clay Buchholz | 95.3 | BOS |
| +025+ | 4.96 | Yu Darvish | 198.7 | TEX |
| +028+ | 4.73 | Adam Wainwright | 229.3 | SLN |
| +030+ | 4.67 | Cliff Lee | 207.7 | PHI |
| +036+ | 4.39 | Zack Greinke | 166.7 | LAN |
| +039+ | 4.3 | Max Scherzer | 201.3 | DET |
| +046+ | 3.78 | Travis Wood | 192 | CHN |
| +051+ | 3.73 | Chris Sale | 201.3 | CHA |
| +055+ | 3.59 | Hyun-Jin Ryu | 181 | LAN |
| +059+ | 3.38 | Hiroki Kuroda | 195.7 | NYA |
| +068+ | 3.21 | Shelby Miller | 161.3 | SLN |
| +072+ | 3.16 | Francisco Liriano | 148 | PIT |
| +075+ | 3.11 | Jhoulys Chacin | 187.3 | COL |
| +074+ | 3.11 | Mike Minor | 191.7 | ATL |
| +076+ | 3.08 | Ervin Santana | 197.7 | KCA |
| +078+ | 3.04 | Julio Teheran | 174.7 | ATL |
| +082+ | 2.97 | Mike Leake | 190.7 | CIN |
| +084+ | 2.93 | Joe Kelly | 111.7 | SLN |
| +092+ | 2.86 | James Shields | 213.7 | KCA |
| +093+ | 2.81 | Patrick Corbin | 199 | ARI |
| +097+ | 2.74 | Tanner Roark | 41.7 | WAS |
| +098+ | 2.72 | Tyler Thornburg | 59.7 | MIL |
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