Carl Jones hit the go-ahead layup in overtime and added two late free throws as the 12th-seeded Hawks (11-21) advanced to the semifinal on Saturday against Dayton (21-12). The ninth-seeded Flyers stunned top-seeded and No. 18 Xavier 68-67 in the opening game at Boardwalk Hall.
Ronald Roberts had 19 points and Idris Hilliard 18 for the Hawks, who won their final regular-season game to make the tournament and then beat George Washington in overtime in the first round.
Damian Saunders and Bill Clark had 21 points apiece for Duquesne (18-12), which lost for the seventh time in nine games. A last-second 3-point shot by T.J. McConnell hit off the front of the rim.
Associated Press material included in Duquesne's release
ATLANTIC CITY, N.J. - Carl Jones scored 28 points and Saint Joseph's gave coach Phil Martelli his 300th win with a 93-90 overtime victory over fourth-seeded Duquesne in the quarterfinals of the Atlantic 10 Conference tournament on Friday.