Jesperson made three 3-pointers and grabbed 12 rebounds. Wes Washpun had 19 points on 6-of-11 shooting for Northern Iowa (6-2).
Jesperson made a 3 to stretch the Panthers' lead to 53-47 with eight minutes left. Thompson made a layup and Livingston a 3-pointer to pull George Mason to 53-52 with five minutes to play. Matt Bohannon answered with a 3, and Washpun made a layup to make it 58-52.
Jesperson made a 3-pointer and six free throws, and the Panthers led 67-54 with a minute left.
Livingston's first shot in the opening minute gave the Patriots their only lead.