NEW YORK -- Wagner came back from an 8-point second-half deficit to tie the game in regulation and outscored Princeton 8-2 in overtime for a 48-42 victory on Wednesday.
Orlando Parker scored five points in overtime for the Seahawks.
After Williams tied the game at 40-40 on a layup, neither team scored in the last 2:17 of regulation.
Princeton started quickly, scoring the first nine points of the game, capped by Mack Darrow's 3-pointer 5:39 into the first half. T.J. Bray's layup made it 15-8 with 8:01 left, and Clay Wilson made a 3-point shot for a 22-12 advantage with 2:21 remaining. The Tigers led 23-14 at the break.
Colorado State graduate transfer John Gillon has chosen Syracuse, giving the Orange a potential starter at point guard entering the 2016-17 season.
DeSean Murray, who averaged 20.2 points as a sophomore at Presbyterian, will transfer to Auburn to play for coach Bruce Pearl.
Former Kentucky guard Ed Davender, the only Wildcat with at least 1,500 points and 400 assists, has died. He was 49.