Ryan Conwell scored 22 points as Xavier held on for a critical 73-66 Big East win against Seton Hall on Sunday in Newark, N.J.Dante Maddox Jr. added 12 points and three steals off the bench. Zach Freemantle tallied 11 points and seven rebounds for the Musketeers (18-10, 10-7 Big East), who won their fourth straight game.Isaiah Coleman scored 24 points, Prince Aligbe added 11 points and both had six rebounds for Seton Hall (7-20, 2-14), which dropped its second straight game.Seton Hall overcame a 19-point halftime deficit with a full-court press as it outscored Xavier 45-33 in the second half and forced 18 Musketeer turnovers.Yacine Toumi’s dunk cut Xavier’s lead to single digits at 65-57 for the first time since the 6:52 mark of the first half.Aligbe was fouled as he hit a layup and the three-point play had the Pirates within 65-60 with 1:33 left. After another Xavier turnover, Aligbe drained two free throws for a 12-1 run and the Pirates were within three with 1:23 to play.Conwell’s 3-pointer provided Xavier with breathing room and a 68-62 lead with 58 seconds left. Coleman hit two shots from the charity stripe to make it a four-point game.