Mathiang Muo registered a double-double of 15 points and 11 rebounds as Charleston Southern took a 54-47 decision over Winthrop in Big South Conference Tournament quarterfinal action at HTC Center.
Arlon Harper added 11 points and five boards for the Buccaneers (18-11), who made just 14-of-50 shots from the floor but went 19-of-21 from the free throw line.
Charleston Southern, the top seed out of the South division, advances to the semifinals to face second the seed of the north, VMI, on Saturday.
Joab Jerome paced Winthrop (14-17), which was seeded fifth in the South, with 15 points in defeat. Gideon Gamble scored 10 points with six rebounds for the Eagles, who shot a mere 32 percent (16-of-50) from the floor that included a 4-of-28 finish from behind the arc.