| Starter | Tm | Tier | Game |
|---|---|---|---|
| Brandon Maurer | SEA | -4.03 | 201309110_HOU_SEA |
| Aaron Harang | NYN | -4.01 | 201309120_WAS_NYN |
| Dan Haren | WAS | -3.46 | 201309110_WAS_NYN |
| Jeremy Hellickson | TBA | -2.73 | 201309120_BOS_TBA |
| Roy Halladay | PHI | -2.43 | 201309120_SDN_PHI |
Based on accumulated WAA for this season up to 2013-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.14 | Clayton Kershaw | 223 | LAN |
| +005+ | 6.77 | Jose Fernandez | 172.7 | MIA |
| +013+ | 5.31 | Anibal Sanchez | 165.7 | DET |
| +019+ | 4.88 | Madison Bumgarner | 194.3 | SFN |
| +021+ | 4.76 | Adam Wainwright | 221.7 | SLN |
| +022+ | 4.75 | Clay Buchholz | 89.3 | BOS |
| +024+ | 4.67 | Hisashi Iwakuma | 203.7 | SEA |
| +027+ | 4.56 | Yu Darvish | 186.7 | TEX |
| +029+ | 4.51 | Chris Sale | 195.7 | CHA |
| +034+ | 4.4 | Cliff Lee | 199.7 | PHI |
| +037+ | 4.27 | Zack Greinke | 160.7 | LAN |
| +040+ | 4.13 | Bartolo Colon | 170.3 | OAK |
| +045+ | 3.91 | Patrick Corbin | 197 | ARI |
| +044+ | 3.91 | Max Scherzer | 194.3 | DET |
| +053+ | 3.67 | Jhoulys Chacin | 183.3 | COL |
| +055+ | 3.63 | Travis Wood | 186 | CHN |
| +059+ | 3.45 | Mat Latos | 197.7 | CIN |
| +060+ | 3.45 | Hiroki Kuroda | 189.7 | NYA |
| +062+ | 3.29 | Julio Teheran | 168 | ATL |
| +061+ | 3.29 | Hyun-Jin Ryu | 173 | LAN |
| +066+ | 3.21 | Mike Minor | 185.7 | ATL |
| +067+ | 3.2 | Ricky Nolasco | 186.3 | TOT |
| +074+ | 3.06 | Francisco Liriano | 142 | PIT |
| +078+ | 3.04 | Shelby Miller | 156.3 | SLN |
| +087+ | 2.78 | Jarred Cosart | 60 | HOU |
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