Troy Reid-Knight hit consecutive 3-pointers midway through the second half - as part of nine Maine 3's in the second half - for a 69-52 lead. The Black Bears made 6 of 8 free throws in the final 1:19 to seal it.
Issac Vann and Aaron Calixte added 14 points apiece for Maine (1-3). Calixte also had six rebounds and seven assists. The Black Bears made 16 of 33 3-pointers (48.5 percent) with two apiece from Vann, Calixte, Kevin Little, and Reid-Knight.
Shields scored nine of Longwood's first 18 points.