Just glancing at Homer's overall 2012 line versus his 2011, he's either lucky this year or was unlucky last year to have an ERA a half-run lower. Slightly higher batting average against, slightly higher walk rate, slightly lower strikeout rate, higher homer rate. The real difference: nine unearned runs in 2012 versus three in 20 starts last year.
http://mlb.mlb.com/team/player.jsp?p...level='ALL'