The Musketeers (14-13, 6-8 Big East Conference) were up 68-52 in the second half with 6:23 to play but Seton Hall finished on a 17-2 rally led by Myles Cale with eight points in the surge to close to a point with 52 seconds remaining. Xavier held on after that as Seton Hall's Shavar Reynolds missed a 3-point attempt with three seconds left.
Marshall was 11 of 23 from the field including five 3-pointers for the Musketeers. Tyrique Jones added 18 points and 15 rebounds for his eighth double-double of the season. Zach Hankins chipped in 10 points and four rebounds.