Freshman guard Seth Allen contributed nine points and Pe'Shon Howard had eight points and seven assists for the Terrapins (10-1), who haven't lost since dropping the season opener to Kentucky on Nov. 9. The 10-game run is Maryland's longest since the 2000-01 season and four short of the school record.
After the Terrapins let a 20-point lead dwindle to 69-66, Len missed two free throws with 54 seconds left. The 7-foot-1 center grabbed the rebound of the second misfire, though, and dunked it.
Len scored five points in the opening two minutes of the second half to fuel an 11-4 run that put the Terrapins up 56-36. Faust capped the spree by lofting a 60-foot pass that Wells collected on one bounce before dropping in a layup.
Maryland then went cold while the Seawolves rattled off 11 straight points. Allen ended the Terrapins' 4 1/2-minute drought with a 3-pointer, and Logan Aronhalt followed with a buzzer-beating 3 to make it 62-47 with 12:27 left.
The Seawolves rallied but could not complete the comeback.
Wells scored 12, Len had 11 and the Terrapins shot 64 percent -- going 7 for 12 beyond the arc -- to take a 45-32 halftime lead. Howard contributed six points and five assists.
After Warney opened the scoring with a layup for the Seawolves, Len had three baskets in a nine-point run that put Maryland ahead for good. It was 12-8 before Wells made a layup, a 3-pointer and a three-point play to launch a 16-7 spree.
Maryland hit 11 of its first 13 shots from the floor, including a 4 for 4 performance by Len.
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Mike Krzyzewski says he has good reason to be excited for next season thanks to a combination of Duke's incoming freshmen and a core of experienced upperclassmen.
Georgia guard Juwan Parker has been awarded a medical redshirt, leaving him with two years of eligibility, after missing the 2015-16 season with a partially torn Achilles tendon.
Forward Trevon Bluiett has withdrawn from consideration from the NBA draft and will return to Xavier for his junior season.