Barbour scored 15 of his 19 points in the second half and made 10 of 10 from the free-throw line overall, including eight in the second half.
Columbia led 27-19 with 3:39 to go until halftime, but Marist scored the next eight points on 3-pointers by Isaiah Morton and Price and a jumper by Lewis. Neither team led by more than four the rest of the way until Curry's final free throw.
Maryland point guard Melo Trimble, considered a lock to leave the program before struggling in the second half last season, has withdrawn from the NBA draft and will return for his junior season.
Louisville's Chinanu Onuaku, who recently underwent a medical procedure to correct a heart rhythm issue detected during the combine, will keep his name in the NBA draft pool.
Andrew White III will return to the Nebraska men's basketball team next season after removing his name from the NBA draft.