Lewis was 10 of 16, grabbed nine rebounds and dished five assists, as the Red Foxes (11-16) shot 51.8 percent from the field (29 of 56).
Marist also shot 53.3 percent from 3-point range (8 of 15) in the Bracket Busters contest.
Devin Price added 16 points and Manny Thomas and Isaiah Morton had 10 each in the Red Foxes’ fourth win in their last five.
The Red Foxes had just one less turnover than Maine (16-15) but tallied 22 assists, compared to 13 by the Black Bears (11-14).
Struggling to move the ball, Maine shot 39.7 percent from the field (25 of 63).
Gerald McLemore scored 20 points and Mike Allison had 12 points and 12 rebounds to lead the Black Bears, in their fourth straight loss.