Rotnei Clarke scored 16 points and Khyle Marshall added 14 to lead No. 15 Butler past reeling Duquesne 68-49 on Tuesday night.
The Bulldogs (22-5, 9-3 Atlantic 10) have won five of their last six and managed to keep pace with league-leading Virginia Commonwealth, which went into the night with a one-game lead over Butler and a ½ game lead over St. Louis.
Duquesne (8-18, 1-11) was led by Derrick Colter with 11 points and Jerry Jones with nine but lost for the 15th time in 17 games.
It took Butler a while to warm up. Once they did, it was no contest.
The Bulldogs used built a 23-14 lead late in the first half and extended it to 36-22 at the break.
Butler scored 13 of the first 20 points in the second half to make it 49-29 and the Dukes never got closer than 15 again.