Justin Harper scored 16 points and grabbed 12 rebounds and Kevin Anderson added 16 points as Richmond beat Duquesne 68-56 on Saturday in both teams' regular-season finale.
The Spiders (24-7, 13-3 Atlantic 10) won their fourth straight game and have already clinched a first-round bye heading into next week's conference tournament. Cedrick Lindsay pitched in with 11 points.
Richmond went into halftime with a 37-30 lead, then dominated the second half, leading by as many as 17 points. Lindsay gave the Spiders their largest margin when he made a free throw after being fouled on a steal.
The Dukes (18-11, 10-6), who have lost four of their last five games, never got closer than 12 points the rest of the way.
Bill Clark led Duquesne with 18 points and eight rebounds, while Damian Saunders had 10 points and 11 rebounds.