| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jordan Zimmermann | WAS | 6.75 | 201305240_PHI_WAS |
| Felix Hernandez | SEA | 5.97 | 201305250_TEX_SEA |
| Kris Medlen | ATL | 1.91 | 201305240_ATL_NYN |
| Doug Fister | DET | 1.65 | 201305250_MIN_DET |
| R.A. Dickey | TOR | 1.04 | 201305250_BAL_TOR |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Blanton | ANA | -4.92 | 201305230_ANA_KCA |
| Rick Porcello | DET | -3.38 | 201305230_MIN_DET |
| Roberto Hernandez | TBA | -2.25 | 201305240_NYA_TBA |
| Dillon Gee | NYN | -1.96 | 201305250_ATL_NYN |
| Erik Bedard | HOU | -1.19 | 201305240_OAK_HOU |
Based on accumulated WAA for this season up to 2013-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.62 | Clayton Kershaw | 73.3 | LAN |
| +003+ | 3.97 | Jordan Zimmermann | 73.7 | WAS |
| +004+ | 3.84 | Clay Buchholz | 72.7 | BOS |
| +006+ | 3.54 | Patrick Corbin | 62.3 | ARI |
| +007+ | 3.3 | Matt Harvey | 70 | NYN |
| +010+ | 2.97 | Shelby Miller | 57 | SLN |
| +016+ | 2.67 | Cliff Lee | 72.7 | PHI |
| +015+ | 2.67 | Adam Wainwright | 72 | SLN |
| +017+ | 2.67 | James Shields | 73 | KCA |
| +018+ | 2.66 | Felix Hernandez | 75.3 | SEA |
| +020+ | 2.55 | Matt Moore | 61 | TBA |
| +021+ | 2.5 | Hisashi Iwakuma | 64.7 | SEA |
| +022+ | 2.35 | Mike Minor | 65.7 | ATL |
| +023+ | 2.32 | A.J. Burnett | 70 | PIT |
| +025+ | 2.26 | Anibal Sanchez | 64.3 | DET |
| +031+ | 2.11 | Jeff Locke | 58.7 | PIT |
| +034+ | 2.05 | Stephen Strasburg | 64.3 | WAS |
| +035+ | 2.02 | Travis Wood | 66 | CHN |
| +043+ | 1.83 | Yu Darvish | 66.7 | TEX |
| +046+ | 1.81 | Hiroki Kuroda | 60.7 | NYA |
| +047+ | 1.76 | Alex Cobb | 59.3 | TBA |
| +055+ | 1.62 | Derek Holland | 66.7 | TEX |
| +056+ | 1.61 | Madison Bumgarner | 65.3 | SFN |
| +057+ | 1.59 | Trevor Cahill | 64 | ARI |
| +059+ | 1.58 | Scott Feldman | 54.7 | CHN |
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