Duncan attended Merrimack College in North Andover, Massachusetts and graduated in 2010.
[2] Other finalists included Stephen Curry, Jeff Teague, and Ty Lawson.
In his rookie season, Duncan led Raiffesen Dornbirn Lions to the Austrian Division II Basketball League championship.
[3] Duncan was named a National Basketball League of Canada (NBL) All-Star in 2012 and 2013 while he was with the Halifax Rainmen and Windsor Express.
[4] On August 7, 2015, Duncan signed a one-year deal with Apollon Patras of the Greek Basket League.