| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cliff Lee | PHI | 5.96 | 201304090_NYN_PHI |
| Gio Gonzalez | WAS | 4.21 | 201304090_CHA_WAS |
| Felix Hernandez | SEA | 3.05 | 201304110_TEX_SEA |
| Doug Fister | DET | 2.27 | 201304110_TOR_DET |
| Ryan Vogelsong | SFN | 1.58 | 201304110_SFN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jake Arrieta | BAL | -4.26 | 201304100_BAL_BOS |
| Jeff Francis | COL | -3.22 | 201304100_COL_SFN |
| Rick Porcello | DET | -2.45 | 201304100_TOR_DET |
| Roberto Hernandez | TBA | -2.29 | 201304090_TBA_TEX |
| Liam Hendriks | MIN | -1.98 | 201304100_MIN_KCA |
Based on accumulated WAA for this season up to 2013-04-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 1.55 | Clayton Kershaw | 16 | LAN |
| +004+ | 1.42 | Jake Westbrook | 15.7 | SLN |
| +005+ | 1.36 | Barry Zito | 14 | SFN |
| XXXXX | 1.22 | Cliff Lee | 16.7 | PHI |
| XXXXX | 1.21 | Paul Maholm | 12.7 | ATL |
| XXXXX | 1.17 | Clay Buchholz | 14 | BOS |
| XXXXX | 1.17 | Matt Harvey | 14 | NYN |
| XXXXX | 1.11 | Matt Moore | 11.3 | TBA |
| XXXXX | 1.06 | Andy Pettitte | 15 | NYA |
| XXXXX | 1.05 | Justin Masterson | 13 | CLE |
| XXXXX | 1.04 | Mike Minor | 13 | ATL |
| XXXXX | 0.92 | Alexi Ogando | 11.7 | TEX |
| XXXXX | 0.9 | Jhoulys Chacin | 13.3 | COL |
| XXXXX | 0.9 | Madison Bumgarner | 13.7 | SFN |
| XXXXX | 0.84 | Gio Gonzalez | 11 | WAS |
| XXXXX | 0.83 | Brett Anderson | 13 | OAK |
| XXXXX | 0.82 | Travis Wood | 12.3 | CHN |
| XXXXX | 0.79 | Chris Sale | 14.7 | CHA |
| XXXXX | 0.76 | Jon Lester | 12 | BOS |
| XXXXX | 0.75 | Anibal Sanchez | 12 | DET |
| XXXXX | 0.73 | Kris Medlen | 12 | ATL |
| XXXXX | 0.72 | Alex Cobb | 7.3 | TBA |
| XXXXX | 0.71 | Erik Bedard | 7.3 | HOU |
| XXXXX | 0.71 | A.J. Griffin | 14 | OAK |
| XXXXX | 0.7 | Wandy Rodriguez | 9 | PIT |
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