| Starter | Tm | Tier | Game |
|---|---|---|---|
| Justin Verlander | DET | 8.85 | 201305050_DET_HOU |
| Cliff Lee | PHI | 4.15 | 201305060_PHI_SFN |
| Madison Bumgarner | SFN | 3.96 | 201305060_PHI_SFN |
| Hiroki Kuroda | NYA | 3.73 | 201305070_NYA_COL |
| James Shields | KCA | 3.46 | 201305060_CHA_KCA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ubaldo Jimenez | CLE | -5.11 | 201305060_OAK_CLE |
| Philip Humber | HOU | -3.64 | 201305050_DET_HOU |
| Edinson Volquez | SDN | -3.21 | 201305050_ARI_SDN |
| Mike Pelfrey | MIN | -2.52 | 201305050_MIN_CLE |
| Roberto Hernandez | TBA | -2.23 | 201305070_TOR_TBA |
Based on accumulated WAA for this season up to 2013-05-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.98 | Matt Harvey | 49.3 | NYN |
| +003+ | 2.8 | Felix Hernandez | 50.7 | SEA |
| +004+ | 2.79 | Clay Buchholz | 50.7 | BOS |
| +005+ | 2.65 | Clayton Kershaw | 48.7 | LAN |
| +006+ | 2.45 | Hisashi Iwakuma | 44.7 | SEA |
| +007+ | 2.41 | Jordan Zimmermann | 44 | WAS |
| +008+ | 2.38 | Justin Verlander | 46.3 | DET |
| +013+ | 2.24 | Jake Westbrook | 33.7 | SLN |
| +015+ | 2.21 | Kevin Slowey | 44.7 | MIA |
| +018+ | 1.87 | Patrick Corbin | 40 | ARI |
| +022+ | 1.8 | Anibal Sanchez | 39.7 | DET |
| +021+ | 1.8 | Matt Moore | 37 | TBA |
| +024+ | 1.76 | Travis Wood | 46.3 | CHN |
| +025+ | 1.75 | Kyle Kendrick | 47.7 | PHI |
| +027+ | 1.73 | Madison Bumgarner | 46.7 | SFN |
| +028+ | 1.72 | Jaime Garcia | 44 | SLN |
| +030+ | 1.68 | Shelby Miller | 36.7 | SLN |
| +031+ | 1.68 | Mat Latos | 44.3 | CIN |
| +034+ | 1.65 | James Shields | 50 | KCA |
| +035+ | 1.64 | Hiroki Kuroda | 43 | NYA |
| +037+ | 1.55 | Ervin Santana | 42 | KCA |
| +038+ | 1.54 | Yu Darvish | 45.7 | TEX |
| +040+ | 1.49 | Jeremy Guthrie | 41.3 | KCA |
| +043+ | 1.43 | A.J. Burnett | 42 | PIT |
| +044+ | 1.41 | Hector Santiago | 26.7 | CHA |
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