Nunn (26.0 ppg) scored 25 points and Hayes (19.1) had 21 for the Golden Grizzlies (15-10, 7-5 Horizon), who snapped a two-game skid. Nick Daniels added 11 points.
Oakland had a 17-point lead in the second half when the Jaguars (7-16, 4-7) rallied to get within three with T.J. Henderson accounting for 13 straight points during the stretch.
Daniels scored seven straight points as Oakland rebuilt a nine-point lead with 3:44 left. IUPUI cut it to four but Walker took a pass as he cut through the paint from Daniels, whose back was to the basket, and scored. Daniels added two free throws to lead 80-72 with 39 seconds remaining.
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