Nick Cafardo of the Boston Globe reports that David Eckstein has officially decided to retire. Eckstein, 37, didn't play in 2011 but said at midseason that he'd consider playing again in the right situation. But, he's decided to hang up his cleats even though there were some teams willing to offer him a minor league contract. The former World Series MVP played 10 seasons and finishes with a .280/.345/.355 career batting line.