Jason Edwards scored 17 of his 19 points in the second half to help propel Vanderbilt to an 80-64 victory over Virginia Tech in the SEC/ACC Challenge on Wednesday night in Blacksburg, Va.MJ Collins Jr. scored 15 points against his former team and Grant Huffman added nine points and four steals for the Commodores (8-1), who are off to their best start since the 2007-08 season.It was a satisfying victory for Vanderbilt coach Mark Byington, who grew up nearby in Salem, Va., and was an assistant at Virginia Tech in the 2012-13 season.Collins, who started 44 games the previous two seasons for Virginia Tech, made a feisty return to Blacksburg as he barked at his former teammates throughout.Collins scored all of his points in the first half when he helped Vanderbilt take a five-point lead into halftime.Jaden Schutt scored 15 points on five 3-pointers and Mylyjael Poteat added 14 points and seven rebounds to lead Virginia Tech (3-5).It was the fifth straight loss for the Hokies, with each coming by double-digit margins.A putback basket by Tyler Johnson less than five minutes into the second half reduced Vanderbilt’s lead to 45-43. But Virginia Tech failed to get any closer.