CHARLOTTESVILLE, Va. – Freshman AJ Griffin hit back-to-back three-pointers with under four minutes left and sank a pair of free throws in the closing seconds to ice a 65-61 Duke win at Virginia on Wednesday night. After being held to three points on 1-of-8 shooting through 35 minutes of play, Griffin caught fire late to provide the Blue Devils (24-4, 14-3 ACC) with three crucial baskets down the stretch. His pair of three’s were followed up by a driving layup through contact to increase Duke’s lead to five, and the Blue Devils converted at the free throw line to hang on in a back-and-forth aff…