Freshman Cooper Flagg rang up 42 points and No. 4 Duke held off visiting Notre Dame for an 86-78 victory Saturday afternoon in Durham, N.C. Flagg made 11 of 14 shots from the field, including a 4-for-6 mark on 3-pointers, and went 16-for-17 on free throws in setting a record for the most points scored by a freshman in Atlantic Coast Conference history. He also became the first Duke player to reach 40 points since J.J. Redick did it twice in January 2006 and marked the most points for any Blue Devil since…..