Vanderbilt had a six-point lead with less than a minute to go in regulation when SMU (11-2) hit two 3-pointers in nine seconds to tie the game at 77. Jolly connected on one with 28 seconds to go then the Mustangs forced a turnover and Isiaha Mike drilled a 3 with 19 seconds to send the game into overtime.
Aaron Nesmith set a career high with eight 3-pointers, while Vanderbilt (8-5) hit 15 total 3s to tie a season high. Nesmith was 8 of 12 from behind the arc.
Scottie Pippen Jr. contributed 15 points for the Commodores.
With 10:14 to go in the game, Vanderbilt went on a 9-0 run to take its largest lead at 72-57. Nesmith hit his eighth 3-pointer of the game to end the run.
Chargois scored 11 of the Mustangs’ first 13 points as SMU got out to a 13-5 lead to start the game.
SMU extended its lead to 20-8 on an Isiah Jasey layup with 12:56 to go, but Vanderbilt answered with a 10-0 run that included at alley-oop dunk by Maxwell Evans on a pass from Saben Lee.
Jolly made a layup at 7:20 to put the Mustangs back up by 10, but Vanderbilt chipped away until Nesmith hit his fifth 3-pointer of the half with 15 seconds left to tie the game 40-all at the half.
SMU: The Mustangs struggled from the free-throw line in the first half going 3-for-7 (42.9%). They were eighth in the nation in that category at 79.2% before the game. They finished the game 14 of 20.
Vanderbilt: The Commodores were only 1 of 7 from the field in the overtime period, while SMU went a perfect 5-for-5.
SMU hosts Central Florida on Wednesday.
Vanderbilt opens SEC play on the road against Auburn on Wednesday.