| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Francis | COL | -5.9 | 201304270_COL_ARI |
| Rick Porcello | DET | -4.99 | 201304270_ATL_DET |
| Jonathan Sanchez | PIT | -3.62 | 201304260_PIT_SLN |
| Joe Blanton | ANA | -3.46 | 201304270_ANA_SEA |
| J.A. Happ | TOR | -2.03 | 201304270_TOR_NYA |
Based on accumulated WAA for this season up to 2013-04-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.34 | Clay Buchholz | 37.7 | BOS |
| +004+ | 2.11 | Clayton Kershaw | 41.7 | LAN |
| +005+ | 2.1 | Matt Moore | 32 | TBA |
| +008+ | 1.94 | Felix Hernandez | 42.7 | SEA |
| +009+ | 1.91 | Hisashi Iwakuma | 37.7 | SEA |
| +010+ | 1.9 | Matt Harvey | 35 | NYN |
| +011+ | 1.86 | Anibal Sanchez | 33.7 | DET |
| +012+ | 1.83 | Jake Westbrook | 27.7 | SLN |
| +015+ | 1.72 | Yu Darvish | 32.7 | TEX |
| +017+ | 1.65 | Adam Wainwright | 37.3 | SLN |
| +018+ | 1.59 | Ervin Santana | 36 | KCA |
| +019+ | 1.56 | Jordan Zimmermann | 36 | WAS |
| +022+ | 1.53 | Madison Bumgarner | 33.7 | SFN |
| +023+ | 1.46 | Alex Cobb | 29.7 | TBA |
| +027+ | 1.4 | Kevin Correia | 36.3 | MIN |
| +031+ | 1.33 | Patrick Corbin | 33 | ARI |
| +033+ | 1.32 | Justin Verlander | 32.3 | DET |
| +034+ | 1.32 | Ross Detwiler | 31 | WAS |
| +037+ | 1.31 | Carlos Villanueva | 35.3 | CHN |
| +039+ | 1.26 | Shelby Miller | 30.7 | SLN |
| XXXXX | 1.22 | Travis Wood | 32 | CHN |
| XXXXX | 1.21 | Mat Latos | 33.3 | CIN |
| XXXXX | 1.2 | Kyle Kendrick | 33.7 | PHI |
| XXXXX | 1.17 | Jon Lester | 31.7 | BOS |
| XXXXX | 1.15 | Wandy Rodriguez | 21.7 | PIT |
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