David Hakstol (born July 30, 1968) is a Canadian professional ice hockey coach who is currently an assistant coach for the Colorado Avalanche. Hakstol was the head coach for Sioux City Musketeers for four seasons, followed by four years as an assistant at his alma mater, the University of North Dakota. He was promoted to head coach in 2004 and led the program for eleven seasons. Hakstol was a head coach of the Philadelphia Flyers of the National Hockey League (NHL) in 2015, leading the team until his firing in 2018.
https://en.wikipedia.org/wiki/Dave_Hakstol