sentences:  He had nine plate appearances for the Rockies, and retired at the end of the season.His leadership skills and teaching ability, though, shone through and Cockrell spent the next few years working as a manager and hitting coach in various parts of the Colorado Rockies' development system.He returned to the MLB when he was named hitting coach for the Rockies on November 7, 2006 – his second stint, having previously served as hitting instructor the last five months of the 2002 season when Clint Hurdle was promoted to manager.