The Bruins, Racers and Austin Peay were all tied at 5-1 atop the conference going into Thursday's action. The Governors lost to Tennessee State.
The Racers held a 32-38 advantage at intermission and Ja Morant's 3 with 12:20 left gave Murray State a 51-50 lead, but Nick Hopkins sparked a 12-2 run that put the Bruins solidly in charge.
Windler was 5 of 8 and Luke hit 4 of 6 from distance to lead Belmont (14-6, 6-1), with Mack Mercer adding 15 points.
Jonathan Stark scored 19 points to lead Murray State (13-5, 5-2). Terrell Miller Jr. added 16 points and grabbed 11 rebounds and Jalen Dupree added 12 points and grabbed 13 boards.
