Greg Paulus added 20 points for the Blue Devils (22-1, 10-0 Atlantic Coast Conference), who blew most of a 16-point lead but used an 11-2 run to snap Maryland's four-game winning streak.
Greivis Vasquez scored 25 points for the Terrapins (16-9, 6-4), while James Gist -- who averaged 22 points over the past six games -- was held to nine on 3-of-11 shooting.
NO. 4 TENNESSEE 93, ARKANSAS 71
In Knoxville, Tenn., JaJuan Smith scored 32 points, including six 3-pointers, to lead Tennessee in a rout of Arkansas.
Tyler Smith and Wayne Chism both added 15 points for the Volunteers (22-2, 9-1 Southeastern Conference), while Duke Crews had 11 points and 11 rebounds.
Sonny Weems had 20 points for Arkansas (17-6, 6-3).
The Vols took an 11-4 lead in the opening 31/2 minutes, driving inside several times against one of the SEC's stingiest defenses.
Tennessee built its lead to 11 points twice during the first half with the help of free throws.
NO. 12 XAVIER 62, CHARLOTTE 60
In Charlotte, N.C., Josh Duncan scored 25 points, including the clinching 3-pointer with 15.9 seconds left, and Xavier survived its third consecutive close call.
Overcoming foul trouble and 31 points from Charlotte's Leemire Goldwire, the Musketeers got their seventh consecutive win behind Duncan's big night.
NO. 15 WISCONSIN 68, NO. 13 INDIANA 66
In Bloomington, Ind., Brian Butch banked in a 3-pointer with 4.5 seconds left and Wisconsin held on for a victory.
Jason Bohannon had 18 points and Michael Flowers added 15 for the Badgers and the two guards combined to hit nine of Wisconsin's 11 3-pointers.
Eric Gordon scored 23 points to lead the Hoosiers, who were playing hours after coach Kelvin Sampson was accused of five "major" rules violations by the NCAA.
NO. 17 CONNECTICUT 84, NO. 20 NOTRE DAME 78
In Storrs, Conn., A.J. Price scored 26 points to lead Connecticut to its eighth consecutive victory.
Luke Harangody had 32 points and 16 rebounds for Notre Dame, which had a five-game winning streak snapped.