As a player, the 5-foot-11, 177-pound center appeared in 611 career NHL games with Atlanta, Columbus and Florida from 2001-19, posting 125 points (51g-74a). He spent his final five seasons with the Panthers, where he captained the team from 2016-18 and served as an alternate captain from 2014-16. Known for his work as a defensive centerman and tenacity on the penalty kill, MacKenzie recorded eight straight seasons with at least 120 hits from 2010-18; his 1,454 hits during that time frame were the 10th-most among NHL skaters. In the face-off circle, he won at least 50 percent of his draws in 11 of his seasons in which the stat was tracked, led by a career-high 59.4 percent success rate with the Blue Jackets in 2012-13.