Jered Weaver obviously benefits from his pitcher-friendly home park, it's nothing new; it reflects in his advanced stats and actual results:

Career FIP at home: 3.22
Career FIP on the road: 4.04

Career ERA at home: 2.70
Career ERA on the road: 3.90

But Jeff Sullivan investigated something that was kind of cool and interesting about Weaver and his home-field advantage: the rockpile in center/left-center field. I'd definitely recommend reading it; it's a thought-provoking piece and there isn't anything too analytical that requires you to know anything about advanced metrics: http://mlb.sbnation.com/2012/3/21/28890 ... gels-stats