| Starter | Tm | Tier | Game |
|---|---|---|---|
| Justin Verlander | DET | 8.36 | 201305160_DET_TEX |
| Cliff Lee | PHI | 4.97 | 201305170_CIN_PHI |
| James Shields | KCA | 4.53 | 201305170_KCA_OAK |
| Hiroki Kuroda | NYA | 4.04 | 201305170_TOR_NYA |
| Madison Bumgarner | SFN | 3.37 | 201305170_SFN_COL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rick Porcello | DET | -4.24 | 201305170_DET_TEX |
| Ubaldo Jimenez | CLE | -3.83 | 201305170_SEA_CLE |
| Jordan Lyles | HOU | -3.62 | 201305170_HOU_PIT |
| Felix Doubront | BOS | -2.66 | 201305160_BOS_TBA |
| Mike Pelfrey | MIN | -2.06 | 201305150_CHA_MIN |
Based on accumulated WAA for this season up to 2013-05-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.93 | Clayton Kershaw | 64.3 | LAN |
| +002+ | 3.7 | Felix Hernandez | 64.7 | SEA |
| +003+ | 3.54 | Matt Harvey | 63.7 | NYN |
| +005+ | 3.36 | Clay Buchholz | 65.7 | BOS |
| +006+ | 3.17 | Jordan Zimmermann | 58.7 | WAS |
| +007+ | 3.05 | Shelby Miller | 51.3 | SLN |
| +008+ | 2.93 | Hisashi Iwakuma | 58.7 | SEA |
| +009+ | 2.88 | Patrick Corbin | 53.3 | ARI |
| +012+ | 2.69 | Hiroki Kuroda | 58.7 | NYA |
| +014+ | 2.44 | Travis Wood | 53.3 | CHN |
| +017+ | 2.37 | James Shields | 66 | KCA |
| +019+ | 2.2 | Anibal Sanchez | 52.7 | DET |
| +021+ | 2.18 | Adam Wainwright | 64.7 | SLN |
| +022+ | 2.16 | Chris Sale | 64 | CHA |
| +025+ | 2 | Kyle Kendrick | 54.7 | PHI |
| +029+ | 1.83 | Trevor Cahill | 58 | ARI |
| +030+ | 1.8 | Cliff Lee | 63.7 | PHI |
| +034+ | 1.77 | Matt Moore | 48 | TBA |
| +035+ | 1.75 | Jon Lester | 59.7 | BOS |
| +041+ | 1.66 | A.J. Burnett | 56 | PIT |
| +045+ | 1.58 | Stephen Strasburg | 57.3 | WAS |
| +047+ | 1.54 | Mike Minor | 52.3 | ATL |
| +051+ | 1.49 | Jeremy Guthrie | 54.3 | KCA |
| +053+ | 1.48 | Yu Darvish | 60.7 | TEX |
| +056+ | 1.45 | Scott Feldman | 42.7 | CHN |
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