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Bo Pelini
Mark Anthony "Bo" Pelini (born December 13, 1967) is a former American football coach and former player. He was most recently the defensive coordinator for the Louisiana State University Tigers football team. He is the younger brother of former Florida Atlantic head coach Carl Pelini, who has frequently worked under Bo as an assistant coach.
Pelini served as head coach of the Nebraska Cornhuskers from December 2007 until November 2014 and later served as head coach of the Youngstown State University football team from 2015 through 2019. Prior to leading the football program at Nebraska, he was the defensive coordinator for the LSU Tigers, Oklahoma Sooners, and the Nebraska Cornhuskers.
Source: Wikipedia