 On March 1, 2011, as an NHL free agent, Dillon signed a three-year, entry-level contract with the Dallas Stars.Undrafted, and prior to turning professional, Dillon played four seasons of major junior ice hockey in the Western Hockey League (WHL) with the Seattle Thunderbirds.During the 2012–13 season, on February 1, 2013, Dillon registered his first career Gordie Howe hat-trick.