Tyrece Radford posted 18 points and 12 rebounds as No. 20 Virginia Tech handed visiting No. 19 Duke its first Atlantic Coast Conference loss of the season with a 74-67 win on Tuesday night in Blacksburg, Va.Keve Aluma’s 17 points and seven rebounds also gave the Hokies (10-2, 4-1 ACC) a boost, while Jalen Cone chipped in 14 points off the bench.Jeremy Roach’s 22 points and Matthew Hurt’s 20 points and 11 rebounds paced Duke (5-3, 3-1), which had a three-game winning streak snapped. DJ Steward added 14 points.Duke, which was playing in only its second road game of the season, climbed back to within 64-59 with less than eight minutes remaining before the Hokies steadied themselves. Aluma made consecutive shots from the field.But Virginia Tech had a stretch of 6 1/2 minutes with just those four points, while Duke’s offense slumped as well with a five-minute span with just one basket from the floor.Then at 68-64, the Hokies posted the next five points, capped by Justyn Mutts’ dunk at the 1:02 mark.Virginia Tech overcame 12-for-19 shooting at the free-throw line.The Blue Devils finished 8-for-29 on 3-point attempts, part of their 40 percent shooting from the field overall.