On the campus of Mr. Jefferson’s university, it is said that ghost dogs stalk the old football field. This is a cheap way to point out that the University of Virginia’s basketball team enters this year’s NCAA tournament also haunted by dark visions of dogs it has encountered—specifically, the Retrievers of the University of Maryland-Baltimore County who, a year ago, made the Cavaliers the first and only No. 1 seed to lose to a No. 16 seed. The Cavaliers get their first chance to lay the ghost on Friday, against Gardner-Webb, a school whose only previous impact in this tournament was that Artis...