Andrew Scott Bailey is an American former professional baseball pitcher and current pitching coach for the Boston Red Sox of Major League Baseball (MLB). As a player, he played in MLB for the Oakland Athletics, Los Angeles Angels, Red Sox, New York Yankees, and Philadelphia Phillies. He played college baseball for Wagner College and was selected by the Athletics in the sixth round of the 2006 MLB draft. He made his MLB debut in 2009 and won that season's American League Rookie of the Year Award. He was an All-Star in 2009 and 2010 while he was the closer for the Athletics. He has also been a pitching coach for the San Francisco Giants.