| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clayton Kershaw | LAN | 12.35 | 201305200_LAN_MIL |
| Hiroki Kuroda | NYA | 5.01 | 201305220_NYA_BAL |
| Cliff Lee | PHI | 5.01 | 201305220_PHI_MIA |
| James Shields | KCA | 4.89 | 201305220_KCA_HOU |
| Justin Verlander | DET | 4.67 | 201305220_DET_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ubaldo Jimenez | CLE | -3.53 | 201305220_DET_CLE |
| Jordan Lyles | HOU | -2.99 | 201305220_KCA_HOU |
| Phil Hughes | NYA | -2.78 | 201305210_NYA_BAL |
| Mike Pelfrey | MIN | -2.62 | 201305210_MIN_ATL |
| Edinson Volquez | SDN | -2.58 | 201305210_SLN_SDN |
Based on accumulated WAA for this season up to 2013-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.58 | Clayton Kershaw | 73.3 | LAN |
| +003+ | 3.8 | Clay Buchholz | 72.7 | BOS |
| +004+ | 3.7 | Jordan Zimmermann | 66.7 | WAS |
| +005+ | 3.5 | Patrick Corbin | 62.3 | ARI |
| +007+ | 3.28 | Matt Harvey | 70 | NYN |
| +008+ | 3.15 | Felix Hernandez | 69.7 | SEA |
| +009+ | 2.92 | Shelby Miller | 57 | SLN |
| +011+ | 2.64 | James Shields | 73 | KCA |
| +013+ | 2.62 | Adam Wainwright | 72 | SLN |
| +012+ | 2.62 | Cliff Lee | 72.7 | PHI |
| +018+ | 2.47 | Hisashi Iwakuma | 64.7 | SEA |
| +019+ | 2.46 | Travis Wood | 60.3 | CHN |
| +023+ | 2.2 | Matt Moore | 55 | TBA |
| +024+ | 2.16 | Chris Sale | 64 | CHA |
| +028+ | 2.07 | Scott Feldman | 49.3 | CHN |
| +029+ | 2.04 | A.J. Burnett | 63 | PIT |
| +030+ | 2.01 | Stephen Strasburg | 64.3 | WAS |
| +036+ | 1.84 | Justin Masterson | 70 | CLE |
| +038+ | 1.81 | Hiroki Kuroda | 60.7 | NYA |
| +040+ | 1.8 | Yu Darvish | 66.7 | TEX |
| +042+ | 1.76 | Alex Cobb | 59.3 | TBA |
| +046+ | 1.7 | Kyle Kendrick | 60.7 | PHI |
| +051+ | 1.64 | Mike Minor | 58.3 | ATL |
| +053+ | 1.61 | Ervin Santana | 55.3 | KCA |
| +054+ | 1.59 | Madison Bumgarner | 65.3 | SFN |
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