Joe Harris had just scored a career-high 36 points, nearly half of his team’s total in a 73-68 basketball victory against No. 3 Duke at Charlottesville, Va., and the junior guard was talking about “a team effort” and how the Cavaliers played “sound defense.” Joe, was that the best performance of your basketball career? “I guess you could say that,” he finally allowed. Harris and Akil Mitchell, who had 19 points and 12 rebounds, combined for 55 of the Cavaliers’ points as they celebrated the 11-year anniversary of their last victory over a top-five team by doing it again on Thursday night. When Virginia’s 16th consecutive home victory was finished, fans stormed the court.