Toby Fournier scored 19 points, reserve Arianna Roberson had 19 points in a double-double and No. 21 Duke overwhelmed Pittsburgh 95-41 on Saturday for the Blue Devils' 11th straight win. Roberson, a freshman, was 9-of-15 shooting and matched her high of 12 rebounds for her first double-double. Riley Nelson also posted her first double-double with 18 points and 10 rebounds.