| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cliff Lee | PHI | 5.96 | 201304090_NYN_PHI |
| Gio Gonzalez | WAS | 4.21 | 201304090_CHA_WAS |
| Madison Bumgarner | SFN | 2.41 | 201304080_COL_SFN |
| Hiroki Kuroda | NYA | 2.06 | 201304080_NYA_CLE |
| Jeremy Hellickson | TBA | 1.88 | 201304080_TBA_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jake Arrieta | BAL | -4.26 | 201304100_BAL_BOS |
| Jeff Francis | COL | -3.22 | 201304100_COL_SFN |
| Ubaldo Jimenez | CLE | -2.95 | 201304080_NYA_CLE |
| Rick Porcello | DET | -2.45 | 201304100_TOR_DET |
| Roberto Hernandez | TBA | -2.29 | 201304090_TBA_TEX |
Based on accumulated WAA for this season up to 2013-04-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 1.56 | Clayton Kershaw | 16 | LAN |
| +004+ | 1.43 | Jake Westbrook | 15.7 | SLN |
| +005+ | 1.36 | Barry Zito | 14 | SFN |
| XXXXX | 1.22 | Cliff Lee | 16.7 | PHI |
| XXXXX | 1.22 | Paul Maholm | 12.7 | ATL |
| XXXXX | 1.17 | Clay Buchholz | 14 | BOS |
| XXXXX | 1.17 | Matt Harvey | 14 | NYN |
| XXXXX | 1.12 | Matt Moore | 11.3 | TBA |
| XXXXX | 1.06 | Andy Pettitte | 15 | NYA |
| XXXXX | 1.06 | Justin Masterson | 13 | CLE |
| XXXXX | 1.04 | Mike Minor | 13 | ATL |
| XXXXX | 0.92 | Alexi Ogando | 11.7 | TEX |
| XXXXX | 0.91 | Madison Bumgarner | 13.7 | SFN |
| XXXXX | 0.9 | Jhoulys Chacin | 13.3 | COL |
| XXXXX | 0.85 | Gio Gonzalez | 11 | WAS |
| XXXXX | 0.83 | Travis Wood | 12.3 | CHN |
| XXXXX | 0.83 | Brett Anderson | 13 | OAK |
| XXXXX | 0.78 | Chris Sale | 14.7 | CHA |
| XXXXX | 0.77 | Jon Lester | 12 | BOS |
| XXXXX | 0.76 | 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 | 0.7 | Wandy Rodriguez | 9 | PIT |
| XXXXX | 0.7 | Yu Darvish | 13.7 | TEX |
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