Sebastian Saiz and Martavious Newby added 11 and 10 points, respectively, for Ole Miss (10-2), which won its seventh consecutive game. Saiz had six points in overtime, as the Rebels outscored Troy 5-0 in the final minute to erase an 80-78 deficit.
Jeremy Hollimon scored 22 points, including 14 in the final five minutes of regulation, to lead the upset bid for Troy (5-6). Wesley Person and Jordon Varnado added 17 points apiece for the Trojans, who led at halftime 32-31.
The Trojans rallied from a 61-48 deficit with 7:48 left behind Hollimon's late outburst to force overtime at 73-73.