[1] From 1995 to 2000, Morrison attended the University of Prince Edward Island and played for the Panthers in the Canadian Inter-university Sport (CIS).
[3] He also finished as the Atlantic University Sport's all-time leader for career three-pointers made (220 in 99 games), still holding the record as of the 2019–20 season.
[8] Morrison spent the 2013–14 season with the Maine Red Claws of the NBA D-League as a volunteer player development coach.
[7] In the 2014–15 season, he led Maine to a franchise-best 35–15 record and was selected to helm the Eastern Conference Futures team in the 2015 NBA D-League All-Star Game.
[13] On August 24, 2021, Morrison was appointed head coach of the Perth Wildcats of Australia's National Basketball League, on a three-year contract.
The team won a silver medal at the 2014 FIBA Americas U18 tournament, and placed sixth at the U19 World Championships in 2013 in Prague, both of which were all-time best finishes for Canada in this age group.