| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rick Porcello | DET | -3.35 | 201306300_DET_TBA |
| Edwin Jackson | CHN | -3.27 | 201306300_CHN_SEA |
| Wily Peralta | MIL | -2.85 | 201307020_MIL_WAS |
| Justin Grimm | TEX | -2.83 | 201307020_SEA_TEX |
| Jason Hammel | BAL | -2.26 | 201307020_BAL_CHA |
Based on accumulated WAA for this season up to 2013-07-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.21 | Clayton Kershaw | 130.3 | LAN |
| +005+ | 5.1 | Matt Harvey | 117 | NYN |
| +006+ | 5.04 | Adam Wainwright | 125.7 | SLN |
| +010+ | 4.24 | Jordan Zimmermann | 120.7 | WAS |
| +012+ | 4.12 | Cliff Lee | 125.3 | PHI |
| +014+ | 4.04 | Stephen Strasburg | 100.3 | WAS |
| +015+ | 4 | Hisashi Iwakuma | 115.3 | SEA |
| +017+ | 3.74 | Patrick Corbin | 115.7 | ARI |
| +022+ | 3.49 | Mike Leake | 103.7 | CIN |
| +023+ | 3.29 | Felix Hernandez | 116.7 | SEA |
| +027+ | 2.99 | Ervin Santana | 111 | KCA |
| +030+ | 2.96 | Yu Darvish | 113.3 | TEX |
| +032+ | 2.88 | Chris Sale | 106.3 | CHA |
| +037+ | 2.81 | Hyun-Jin Ryu | 105 | LAN |
| +039+ | 2.74 | James Shields | 117.3 | KCA |
| +042+ | 2.73 | Bartolo Colon | 106.3 | OAK |
| +043+ | 2.69 | Travis Wood | 104.3 | CHN |
| +048+ | 2.54 | Jose Fernandez | 92.7 | MIA |
| +049+ | 2.52 | Shelby Miller | 93.7 | SLN |
| +053+ | 2.48 | Hiroki Kuroda | 106.7 | NYA |
| +058+ | 2.38 | Mat Latos | 110 | CIN |
| +059+ | 2.37 | Mike Minor | 102.7 | ATL |
| +060+ | 2.34 | Francisco Liriano | 60.7 | PIT |
| +061+ | 2.32 | Madison Bumgarner | 111 | SFN |
| +062+ | 2.31 | John Lackey | 86.3 | BOS |
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