The Flames (16-11, 7-7 Big South) closed the game on an 8-0 run in the final minute -- all at the foul line -- and led the entire second half, by as many as 14 early in the period. But the Bulldogs (12-15, 7-7) rallied to within one on David Efianayi's layup that made it 59-58 with 6:29 left.
Kemrite's catch-and-shoot 3-pointer coming off a screen with 1:54 left gave the Flames a 69-63 lead.
Scottie James had 14 points and nine rebounds, and Pacheco-Ortiz scored 13 for Liberty.
Efianayi scored 19, Liam O'Reilly added 17 and Cornwall 15 for Gardner-Webb.
The rebuilding Wildcats are set to raise the 2018 national championship banner next week and also lower expectations for the year ahead after multiple NBA departures.
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Michigan coach John Beilein can't yell or throw a chest pass yet after his offseason heart surgery, but the coach says he is ready for the upcoming season -- and fully expects to be recovered by that time.