| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clayton Kershaw | LAN | 9.77 | 201305030_LAN_SFN |
| Justin Verlander | DET | 8.85 | 201305050_DET_HOU |
| Felix Hernandez | SEA | 4.98 | 201305030_SEA_TOR |
| Kyle Lohse | MIL | 3.25 | 201305030_SLN_MIL |
| CC Sabathia | NYA | 2.79 | 201305030_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Francis | COL | -5.6 | 201305030_TBA_COL |
| Philip Humber | HOU | -3.64 | 201305050_DET_HOU |
| Edinson Volquez | SDN | -3.21 | 201305050_ARI_SDN |
| Mike Pelfrey | MIN | -2.52 | 201305050_MIN_CLE |
| Ricky Nolasco | MIA | -1.65 | 201305030_MIA_PHI |
Based on accumulated WAA for this season up to 2013-05-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.14 | Clay Buchholz | 44.7 | BOS |
| +003+ | 2.82 | Felix Hernandez | 50.7 | SEA |
| +004+ | 2.69 | Clayton Kershaw | 48.7 | LAN |
| +005+ | 2.47 | Hisashi Iwakuma | 44.7 | SEA |
| +006+ | 2.44 | Jordan Zimmermann | 44 | WAS |
| +007+ | 2.41 | Justin Verlander | 46.3 | DET |
| +013+ | 2.26 | Jake Westbrook | 33.7 | SLN |
| +012+ | 2.26 | Madison Bumgarner | 40.7 | SFN |
| +015+ | 2.21 | Kevin Slowey | 44.7 | MIA |
| +014+ | 2.21 | Matt Harvey | 40.3 | NYN |
| +020+ | 1.89 | Patrick Corbin | 40 | ARI |
| +021+ | 1.84 | Matt Moore | 37 | TBA |
| +022+ | 1.82 | Anibal Sanchez | 39.7 | DET |
| +024+ | 1.74 | Jaime Garcia | 44 | SLN |
| +026+ | 1.7 | Mat Latos | 44.3 | CIN |
| +027+ | 1.69 | Shelby Miller | 36.7 | SLN |
| +033+ | 1.55 | Yu Darvish | 45.7 | TEX |
| +032+ | 1.55 | Kyle Kendrick | 40.7 | PHI |
| +034+ | 1.53 | Jeremy Guthrie | 41.3 | KCA |
| +036+ | 1.46 | A.J. Burnett | 42 | PIT |
| +038+ | 1.43 | Hiroki Kuroda | 36 | NYA |
| +039+ | 1.42 | Adam Wainwright | 49.7 | SLN |
| +041+ | 1.38 | Travis Wood | 39.7 | CHN |
| +050+ | 1.27 | Ross Detwiler | 36 | WAS |
| +051+ | 1.27 | Derek Holland | 42.7 | TEX |
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