| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clayton Kershaw | LAN | 8.68 | 201304230_LAN_NYN |
| Justin Verlander | DET | 7.37 | 201304250_KCA_DET |
| Cliff Lee | PHI | 5.11 | 201304250_PIT_PHI |
| James Shields | KCA | 3.38 | 201304250_KCA_DET |
| Hiroki Kuroda | NYA | 3.29 | 201304250_TOR_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Francis | COL | -5.07 | 201304231_ATL_COL |
| Edinson Volquez | SDN | -3.55 | 201304240_MIL_SDN |
| Phil Hughes | NYA | -1.98 | 201304230_NYA_TBA |
| Ricky Nolasco | MIA | -1.77 | 201304232_MIA_MIN |
| Philip Humber | HOU | -1.66 | 201304250_HOU_BOS |
Based on accumulated WAA for this season up to 2013-04-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.35 | Clay Buchholz | 37.7 | BOS |
| +005+ | 1.91 | Matt Harvey | 35 | NYN |
| +006+ | 1.76 | Matt Moore | 26 | TBA |
| +008+ | 1.72 | Paul Maholm | 26.3 | ATL |
| +009+ | 1.7 | Yu Darvish | 32.7 | TEX |
| +010+ | 1.65 | Adam Wainwright | 37.3 | SLN |
| +013+ | 1.63 | Justin Masterson | 34 | CLE |
| +015+ | 1.6 | Carlos Villanueva | 29.3 | CHN |
| +018+ | 1.54 | Madison Bumgarner | 33.7 | SFN |
| +020+ | 1.51 | Ross Detwiler | 26 | WAS |
| +022+ | 1.47 | Alex Cobb | 29.7 | TBA |
| +024+ | 1.45 | Felix Hernandez | 34.7 | SEA |
| +025+ | 1.4 | Clayton Kershaw | 33.7 | LAN |
| +026+ | 1.39 | Shelby Miller | 25 | SLN |
| +027+ | 1.39 | Hisashi Iwakuma | 31.7 | SEA |
| +030+ | 1.32 | Justin Verlander | 32.3 | DET |
| +031+ | 1.31 | Jake Westbrook | 21.7 | SLN |
| XXXXX | 1.19 | Patrick Corbin | 26.3 | ARI |
| XXXXX | 1.18 | Mat Latos | 33.3 | CIN |
| XXXXX | 1.18 | Mike Minor | 25 | ATL |
| XXXXX | 1.18 | Jon Lester | 31.7 | BOS |
| XXXXX | 1.16 | Anibal Sanchez | 25.7 | DET |
| XXXXX | 1.15 | Wandy Rodriguez | 21.7 | PIT |
| XXXXX | 1.09 | Travis Wood | 26 | CHN |
| XXXXX | 1.07 | Andy Pettitte | 28.3 | NYA |
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