CHARLOTTESVILLE, Va. — Rebecca Greenwell hit four 3-pointers and scored 21 points to lead No. 15 Duke to a 70-51 victory over Virginia on Sunday for the Blue Devils’ 20th victory. Greenwell was 7-of-10 shooting and had a team-high six rebounds for the Blue Devils (20-4, 8-3 ACC). Lexie Brown added 17 points on 7-of-11