 Tyson's brother T.J. Mulock also plays professionally.Mulock played major junior in the Western Hockey League (WHL) for four seasons with the Medicine Hat Tigers and Regina Pats, beginning in 1999–2000.After a major junior career-high 51 points in 72 games with the Pats in 2002–03, Mulock moved to the Junior A British Columbia Hockey League (BCHL) to play one season with the Nanaimo Clippers.