| Starter | Tm | Tier | Game |
|---|---|---|---|
| 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 |
| Matt Harvey | NYN | 2.56 | 201305220_CIN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Blanton | ANA | -4.92 | 201305230_ANA_KCA |
| Ubaldo Jimenez | CLE | -3.53 | 201305220_DET_CLE |
| Rick Porcello | DET | -3.38 | 201305230_MIN_DET |
| Jordan Lyles | HOU | -2.99 | 201305220_KCA_HOU |
| Phil Hughes | NYA | -2.78 | 201305210_NYA_BAL |
Based on accumulated WAA for this season up to 2013-05-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.6 | Clayton Kershaw | 73.3 | LAN |
| +003+ | 3.83 | Clay Buchholz | 72.7 | BOS |
| +004+ | 3.72 | Jordan Zimmermann | 66.7 | WAS |
| +005+ | 3.52 | Patrick Corbin | 62.3 | ARI |
| +007+ | 3.3 | Matt Harvey | 70 | NYN |
| +008+ | 3.17 | Felix Hernandez | 69.7 | SEA |
| +009+ | 2.94 | Shelby Miller | 57 | SLN |
| +013+ | 2.66 | James Shields | 73 | KCA |
| +015+ | 2.64 | Adam Wainwright | 72 | SLN |
| +014+ | 2.64 | Cliff Lee | 72.7 | PHI |
| +019+ | 2.49 | Travis Wood | 60.3 | CHN |
| +020+ | 2.49 | Hisashi Iwakuma | 64.7 | SEA |
| +025+ | 2.21 | Matt Moore | 55 | TBA |
| +026+ | 2.18 | Chris Sale | 64 | CHA |
| +029+ | 2.09 | Scott Feldman | 49.3 | CHN |
| +031+ | 2.06 | A.J. Burnett | 63 | PIT |
| +032+ | 2.03 | Stephen Strasburg | 64.3 | WAS |
| +036+ | 1.86 | Justin Masterson | 70 | CLE |
| +038+ | 1.83 | Hiroki Kuroda | 60.7 | NYA |
| +040+ | 1.82 | Yu Darvish | 66.7 | TEX |
| +042+ | 1.78 | Alex Cobb | 59.3 | TBA |
| +046+ | 1.72 | Kyle Kendrick | 60.7 | PHI |
| +051+ | 1.66 | Mike Minor | 58.3 | ATL |
| +054+ | 1.61 | Madison Bumgarner | 65.3 | SFN |
| +056+ | 1.57 | Trevor Cahill | 64 | ARI |
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