A few days ago I put up a post comapring the current Yankees and Red Sox rosters, on paper (the bombers won). I used Fangraphs and Baseball Prospectus to value players on either team. Those two sites didn’t agree on a lot of player values, and often disagreed about which team had the better player at a given position. Second base was one such position. Baseball Prospectus felt that Robinson Cano was a full win more valuable than Dustin Pedroia, while Fangraphs felt the opposite.