| Starter | Tm | Tier | Game |
|---|---|---|---|
| Edinson Volquez | SDN | -6.64 | 201307250_SDN_MIL |
| Jason Hammel | BAL | -3.25 | 201307230_BAL_KCA |
| Mike Pelfrey | MIN | -2.87 | 201307240_MIN_ANA |
| Ian Kennedy | ARI | -2.59 | 201307240_CHN_ARI |
| Roberto Hernandez | TBA | -2.55 | 201307230_TBA_BOS |
Based on accumulated WAA for this season up to 2013-07-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.77 | Clayton Kershaw | 152.3 | LAN |
| +005+ | 5.31 | Adam Wainwright | 154.7 | SLN |
| +006+ | 4.99 | Matt Harvey | 137 | NYN |
| +009+ | 4.91 | Felix Hernandez | 144.7 | SEA |
| +011+ | 4.76 | Patrick Corbin | 136.3 | ARI |
| +013+ | 4.68 | Jeff Locke | 115 | PIT |
| +016+ | 4.36 | Hiroki Kuroda | 132.7 | NYA |
| +018+ | 4.3 | Bartolo Colon | 135.7 | OAK |
| +025+ | 3.62 | Mike Leake | 128.7 | CIN |
| +027+ | 3.41 | Hisashi Iwakuma | 144.3 | SEA |
| +028+ | 3.36 | Francisco Liriano | 88.7 | PIT |
| +031+ | 3.28 | Chris Sale | 128 | CHA |
| +037+ | 3.14 | Stephen Strasburg | 123.3 | WAS |
| +039+ | 3.03 | Cliff Lee | 144.7 | PHI |
| +040+ | 3 | Yu Darvish | 125.7 | TEX |
| +042+ | 2.99 | Madison Bumgarner | 132 | SFN |
| +043+ | 2.97 | Shelby Miller | 110.7 | SLN |
| +044+ | 2.95 | Ervin Santana | 138.3 | KCA |
| +045+ | 2.94 | Gio Gonzalez | 130.3 | WAS |
| +047+ | 2.92 | Mike Minor | 130 | ATL |
| +048+ | 2.91 | Travis Wood | 128.3 | CHN |
| +051+ | 2.89 | Jose Fernandez | 111.7 | MIA |
| +050+ | 2.89 | Anibal Sanchez | 104 | DET |
| +052+ | 2.89 | Jordan Zimmermann | 134.3 | WAS |
| +055+ | 2.72 | Jorge de la Rosa | 121.3 | COL |
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