| Starter | Tm | Tier | Game |
|---|---|---|---|
| Justin Grimm | TEX | -3.92 | 201307070_HOU_TEX |
| Edinson Volquez | SDN | -3.48 | 201307080_COL_SDN |
| Joe Blanton | ANA | -3.37 | 201307090_ANA_CHN |
| Dan Haren | WAS | -3.17 | 201307080_WAS_PHI |
| Jason Hammel | BAL | -2.71 | 201307070_BAL_NYA |
Based on accumulated WAA for this season up to 2013-07-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.79 | Clayton Kershaw | 138.3 | LAN |
| +004+ | 5.4 | Adam Wainwright | 140.7 | SLN |
| +010+ | 4.46 | Matt Harvey | 130 | NYN |
| +011+ | 4.43 | Jeff Locke | 109 | PIT |
| +012+ | 4.21 | Patrick Corbin | 123.7 | ARI |
| +014+ | 4.16 | Jordan Zimmermann | 126 | WAS |
| +016+ | 3.9 | Cliff Lee | 131.7 | PHI |
| +017+ | 3.8 | Stephen Strasburg | 106.3 | WAS |
| +018+ | 3.77 | Felix Hernandez | 130.7 | SEA |
| +022+ | 3.45 | Travis Wood | 117 | CHN |
| +023+ | 3.42 | Bartolo Colon | 120.3 | OAK |
| +028+ | 3.17 | Chris Sale | 113.3 | CHA |
| +029+ | 3.14 | Hiroki Kuroda | 113.7 | NYA |
| +030+ | 3.14 | Mike Leake | 108.7 | CIN |
| +031+ | 3.05 | Hyun-Jin Ryu | 111.7 | LAN |
| +033+ | 3.03 | Ervin Santana | 118 | KCA |
| +044+ | 2.77 | Hisashi Iwakuma | 124.3 | SEA |
| +045+ | 2.75 | Francisco Liriano | 69.7 | PIT |
| +047+ | 2.67 | Shelby Miller | 99.7 | SLN |
| +048+ | 2.64 | James Shields | 129.7 | KCA |
| +052+ | 2.56 | John Lackey | 93.3 | BOS |
| +055+ | 2.48 | Yu Darvish | 119.3 | TEX |
| +057+ | 2.45 | Madison Bumgarner | 118 | SFN |
| +056+ | 2.45 | Jose Fernandez | 98.7 | MIA |
| +059+ | 2.44 | Mike Minor | 115 | ATL |
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