The Broncos (13-7, 5-2 Mid-American Conference) overcame 23 turnovers by shooting 60 percent (12 of 20) in the second half to the RedHawks’ 28.6 percent (8 of 28).
Miami (7-12, 2-5), which lost its fourth straight, led 35-32 at halftime, but the Broncos started the second half with a 14-5 run. They led 54-45 after David Brown’s steal and three-point play with 9:20 left.
The RedHawks rallied to lead 63-62 with 4:07 remaining, but Darius Paul’s layup and another steal and three-point play by Brown put Western Michigan ahead to stay.
Reggie Johnson missed a jumper that could have given Miami a tie with 0:13 left.
Paul scored 12 points and Nate Hutcheson and Brandon Pokley had 11 each for the Broncos.
Will Felder’s 17 points and 13 rebounds led Miami.