| Starter | Tm | Tier | Game |
|---|---|---|---|
| Aaron Harang | SEA | -3.88 | 201308140_SEA_TBA |
| Mike Pelfrey | MIN | -2.88 | 201308150_CHA_MIN |
| Jordan Lyles | HOU | -2.87 | 201308130_HOU_OAK |
| Ryan Vogelsong | SFN | -2.27 | 201308150_SFN_WAS |
| Esmil Rogers | TOR | -2.26 | 201308140_BOS_TOR |
Based on accumulated WAA for this season up to 2013-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 8.49 | Clayton Kershaw | 182.3 | LAN |
| +005+ | 6.02 | Matt Harvey | 165.7 | NYN |
| +008+ | 5.7 | Felix Hernandez | 173.7 | SEA |
| +009+ | 5.66 | Hiroki Kuroda | 154.7 | NYA |
| +012+ | 4.99 | Adam Wainwright | 182.7 | SLN |
| +013+ | 4.97 | Patrick Corbin | 163.3 | ARI |
| +019+ | 4.54 | Jose Fernandez | 139.7 | MIA |
| +020+ | 4.45 | Jeff Locke | 137 | PIT |
| +022+ | 4.42 | Yu Darvish | 153.7 | TEX |
| +024+ | 4.26 | Madison Bumgarner | 158 | SFN |
| +025+ | 4.19 | Chris Sale | 158.3 | CHA |
| +027+ | 4.1 | Anibal Sanchez | 133 | DET |
| +031+ | 3.86 | Bruce Chen | 72.3 | KCA |
| +034+ | 3.76 | Mike Minor | 157 | ATL |
| +035+ | 3.74 | Max Scherzer | 164.3 | DET |
| +036+ | 3.71 | Stephen Strasburg | 146.3 | WAS |
| +038+ | 3.54 | Mike Leake | 147.7 | CIN |
| +046+ | 3.32 | Hyun-Jin Ryu | 148.3 | LAN |
| +047+ | 3.31 | Jordan Zimmermann | 158 | WAS |
| +052+ | 3.19 | Chad Gaudin | 93 | SFN |
| +053+ | 3.19 | Bartolo Colon | 154.3 | OAK |
| +051+ | 3.19 | Travis Wood | 153 | CHN |
| +054+ | 3.15 | Hisashi Iwakuma | 164 | SEA |
| +058+ | 3.06 | Mat Latos | 154 | CIN |
| +060+ | 3.03 | Francisco Liriano | 114 | PIT |
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