 In 2010, Colbrunn managed the RiverDogs to a 65–74 (.468) record.Then, following the season, Colbrunn joined the coaching staff of new Red Sox manager John Farrell as primary batting instructor.Under his guidance, the 2013 Red Sox led the Major Leagues in runs scored (853), runs per game (5.27), slugging percentage (.446), on-base percentage (.349), on-base plus slugging (.795), total bases (2,521) and extra-base hits (570).