| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clayton Kershaw | LAN | 12.35 | 201305200_LAN_MIL |
| Felix Hernandez | SEA | 7.34 | 201305190_SEA_CLE |
| Jordan Zimmermann | WAS | 5.89 | 201305180_WAS_SDN |
| Johnny Cueto | CIN | 4.16 | 201305200_CIN_NYN |
| CC Sabathia | NYA | 2.69 | 201305200_NYA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Blanton | ANA | -4.33 | 201305180_CHA_ANA |
| Ricky Nolasco | MIA | -1.87 | 201305190_ARI_MIA |
| Dillon Gee | NYN | -1.86 | 201305190_NYN_CHN |
| Roberto Hernandez | TBA | -1.45 | 201305180_TBA_BAL |
| Erik Bedard | HOU | -1.38 | 201305180_HOU_PIT |
Based on accumulated WAA for this season up to 2013-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.6 | Clayton Kershaw | 73.3 | LAN |
| +003+ | 3.76 | Jordan Zimmermann | 66.7 | WAS |
| +004+ | 3.56 | Matt Harvey | 63.7 | NYN |
| +005+ | 3.51 | Patrick Corbin | 62.3 | ARI |
| +006+ | 3.38 | Clay Buchholz | 65.7 | BOS |
| +007+ | 3.15 | Felix Hernandez | 69.7 | SEA |
| +009+ | 2.95 | Shelby Miller | 57 | SLN |
| +010+ | 2.69 | Hiroki Kuroda | 58.7 | NYA |
| +013+ | 2.47 | Hisashi Iwakuma | 64.7 | SEA |
| +014+ | 2.46 | Travis Wood | 60.3 | CHN |
| +016+ | 2.42 | James Shields | 66 | KCA |
| +020+ | 2.23 | Matt Moore | 55 | TBA |
| +021+ | 2.2 | Chris Sale | 64 | CHA |
| +022+ | 2.19 | Adam Wainwright | 64.7 | SLN |
| +025+ | 2.08 | A.J. Burnett | 63 | PIT |
| +026+ | 2.07 | Scott Feldman | 49.3 | CHN |
| +035+ | 1.88 | Justin Masterson | 70 | CLE |
| +036+ | 1.86 | Trevor Cahill | 58 | ARI |
| +037+ | 1.81 | Cliff Lee | 63.7 | PHI |
| +039+ | 1.74 | Kyle Kendrick | 60.7 | PHI |
| +042+ | 1.69 | Mike Minor | 58.3 | ATL |
| +044+ | 1.63 | Ervin Santana | 55.3 | KCA |
| +045+ | 1.62 | Stephen Strasburg | 57.3 | WAS |
| +047+ | 1.58 | Zach McAllister | 51 | CLE |
| +053+ | 1.54 | Jeff Locke | 52.7 | PIT |
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