Undrafted guard Quinn Cook is reportedly signing with the Cleveland Cavaliers. Cook, a member of Duke’s 2015 National Championship team, will likely still have to compete for a roster spot. The Cavs already have guard depth in the form of Matthew Dellavedova and Mo Williams, plus the potential return of JR Smith. But Cook, who played for both OKC and Cleveland in Summer League could provide shooting off the bench if the Cavs decide to let Smith walk.