| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clayton Kershaw | LAN | 6.41 | 201304060_PIT_LAN |
| Cliff Lee | PHI | 3.23 | 201304040_PHI_ATL |
| Felix Hernandez | SEA | 2.45 | 201304060_SEA_CHA |
| Ryan Vogelsong | SFN | 2.4 | 201304060_SLN_SFN |
| Doug Fister | DET | 2.28 | 201304050_NYA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Francis | COL | -4.04 | 201304050_SDN_COL |
| Jake Arrieta | BAL | -3.44 | 201304050_MIN_BAL |
| J.A. Happ | TOR | -2.98 | 201304060_BOS_TOR |
| Rick Porcello | DET | -2.94 | 201304040_DET_MIN |
| Ricky Nolasco | MIA | -2.51 | 201304060_MIA_NYN |
Based on accumulated WAA for this season up to 2013-04-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 1.38 | Clayton Kershaw | 16 | LAN |
| XXXXX | 0.76 | Yu Darvish | 8.7 | TEX |
| XXXXX | 0.73 | Jeff Samardzija | 8 | CHN |
| XXXXX | 0.72 | Cliff Lee | 8 | PHI |
| XXXXX | 0.7 | Madison Bumgarner | 8 | SFN |
| XXXXX | 0.64 | Chris Sale | 7.7 | CHA |
| XXXXX | 0.63 | Alex Cobb | 7.3 | TBA |
| XXXXX | 0.62 | Barry Zito | 7 | SFN |
| XXXXX | 0.6 | Matt Harvey | 7 | NYN |
| XXXXX | 0.6 | Wandy Rodriguez | 6.7 | PIT |
| XXXXX | 0.59 | Stephen Strasburg | 7 | WAS |
| XXXXX | 0.57 | Alejandro Sanabia | 6 | MIA |
| XXXXX | 0.56 | Alexi Ogando | 6.3 | TEX |
| XXXXX | 0.55 | Travis Wood | 6 | CHN |
| XXXXX | 0.54 | Zack Greinke | 6.3 | LAN |
| XXXXX | 0.53 | Matt Cain | 6 | SFN |
| XXXXX | 0.52 | Matt Moore | 6 | TBA |
| XXXXX | 0.52 | Jake Westbrook | 6.7 | SLN |
| XXXXX | 0.51 | Andy Pettitte | 8 | NYA |
| XXXXX | 0.5 | Ross Detwiler | 6 | WAS |
| XXXXX | 0.5 | Gio Gonzalez | 6 | WAS |
| XXXXX | 0.49 | Paul Maholm | 5.7 | ATL |
| XXXXX | 0.48 | Dylan Axelrod | 5.7 | CHA |
| XXXXX | 0.47 | Eric Stults | 5 | SDN |
| XXXXX | 0.47 | Mike Pelfrey | 5.3 | MIN |
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