Mitchell hit 11 of 16 field goal attempts, grabbed five rebounds, made four assists and blocked three shots for the Bulls (17-9, 10-4). Javon McCrea added 12 points and Filzen 16, 13 in the second half.
The teams were tied 33-33 at halftime.
Filzen scored 13 of his 16 points in the game's last 10:48. With the score tied at 51-all, the guard hit two treys, sandwiching them around Dave Barnett's 3-pointer to make it 60-53.
Miami (9-18, 5-9) got within four, but Filzen hit two foul shots, then a trey for a 66-60 lead. His last two free throws made it 77-64 with 1:36 left.
- Mitchell Watt