I just found this tid bit on Boston.com http://www.boston.com/sports/baseball/redsox/extras/extra_bases/2014/04/what_to_watch_during_the_red_sox_homestand_as_the.html
" An underrated aspect of the Red Sox' start has been the level of competition they've faced. Through 26 games, 23 have come against teams currently at or above .500. The Yankees, conversely, have played three such contests."