After Ottey's basket, the Jaguars had one shot blocked and missed two more on their final possession.
Michael Diggins and Tarkus Ferguson added 12 points apiece for the Flames. Rob Howard Jr. and Jamie Ahale chipped in 11 points each. Diggins also had seven rebounds for the Flames, while Howard Jr. posted three blocks.
Camron Justice, the Jaguars' leading scorer entering the matchup at 20 points per game, was held to only 6 points (2 of 10).
The Flames leveled the season series against the Jaguars with the win. IUPUI defeated Illinois-Chicago 66-64 on Jan. 4. Illinois-Chicago (13-12, 7-5) takes on Cleveland St. on the road on Thursday. IUPUI matches up against Youngstown State on the road on Thursday.