The Catamounts (18-5, 8-1 America East Conference) have beaten Maine (5-19, 3-6) in 16 consecutive games, their longest active winning streak against a conference opponent. The last Black Bears win over Vermont was a 71-68 victory at home on Jan. 22, 2013.
Duncan matched a season-best with six 3-pointers, Lamb grabbed a game-high seven rebounds and the pair combined to make 13 of the Catamounts' 16 free throws. Stef Smith added three 3s and finished with nine points.
Vermont had a double-digit lead about halfway through the first half and built a 49-33 advantage at the break. Maine pulled to 56-42 with 15:33 to play but didn't get closer.
Vermont made 14 of 22 3-pointers and was 28-for-48 shooting from the floor (58 percent).
Morant: 'I still have a lot of more work to do'
Ja Morant talks with Marty Smith about his journey to Murray State and his rise to being recognized as one of the best players in college basketball.
Iowa's struggles could continue in tourney
ESPN bracketologist Joe Lunardi says No. 10 seed Iowa peaked too early and could be in for a big loss to No. 7 seed Cincinnati.
Don't sleep on Florida State as a Final Four contender
ESPN bracketologist Joe Lunardi won't be picking Florida State in his Final Four, but he says the Seminoles are capable of reaching Minneapolis.