| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roberto Hernandez | TBA | -2.92 | 201306260_TOR_TBA |
| Jason Hammel | BAL | -2.53 | 201306260_CLE_BAL |
| Justin Grimm | TEX | -2.49 | 201306260_TEX_NYA |
| Wily Peralta | MIL | -2.38 | 201306270_CHN_MIL |
| Phil Hughes | NYA | -2.31 | 201306270_TEX_NYA |
Based on accumulated WAA for this season up to 2013-06-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.33 | Clayton Kershaw | 121.3 | LAN |
| +006+ | 4.68 | Matt Harvey | 110 | NYN |
| +008+ | 4.48 | Jordan Zimmermann | 114.7 | WAS |
| +011+ | 4.33 | Adam Wainwright | 116.7 | SLN |
| +012+ | 4.19 | Patrick Corbin | 109.7 | ARI |
| +013+ | 4.11 | Jeff Locke | 96.3 | PIT |
| +014+ | 4.11 | Hisashi Iwakuma | 107.3 | SEA |
| +016+ | 4.03 | Cliff Lee | 118.3 | PHI |
| +020+ | 3.35 | Stephen Strasburg | 93.3 | WAS |
| +021+ | 3.34 | Shelby Miller | 92 | SLN |
| +022+ | 3.28 | Felix Hernandez | 116.7 | SEA |
| +025+ | 3.02 | Ervin Santana | 105 | KCA |
| +027+ | 2.99 | Mike Leake | 96.7 | CIN |
| +035+ | 2.74 | Chris Sale | 98.3 | CHA |
| +036+ | 2.73 | James Shields | 111 | KCA |
| +037+ | 2.69 | Hiroki Kuroda | 100.7 | NYA |
| +043+ | 2.55 | Hyun-Jin Ryu | 98 | LAN |
| +045+ | 2.51 | Travis Wood | 98 | CHN |
| +052+ | 2.34 | Yu Darvish | 106.7 | TEX |
| +053+ | 2.33 | Mike Minor | 102.7 | ATL |
| +056+ | 2.25 | Jake Westbrook | 57 | SLN |
| +059+ | 2.17 | Bartolo Colon | 98.3 | OAK |
| +061+ | 2.14 | Kris Medlen | 98.3 | ATL |
| +062+ | 2.11 | Tyler Chatwood | 50.7 | COL |
| +064+ | 2.02 | Francisco Liriano | 54.7 | PIT |
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