St. Bonaventure freshman guard Dominick Welch set career highs with 20 points, six 3s and three blocks as the Bonnies defeated George Mason 68-57 in the Atlantic 10 quarterfinals.
Fellow freshman Kyle Lofton also scored 20 points.
The Bonnies, who have won eight of their last nine games, take on Rhode Island in the first semifinal game at 1 p.m. Saturday.
Rhode Island won by 12 in the teams’ lone meeting this season.