The Bulldogs (1-1) led 47-44 with 6:07 remaining before scoring nine straight points, including a 3-pointer and a dunk by Chase Stigall, that gave them a 12-point advantage with 55 seconds left in the game. Chattanooga (0-2) missed three 3-pointers and turned the ball over four times during that five-minute stretch.
Ricky Taylor led the Mocs (0-2) with 13 points and Omar Wattad had 10.
Chrishawn Hopkins added 12 points and five assists for Butler.
Neither team shot the ball well. Chattanooga hit 36 percent from the field, including 2 of 14 on 3-pointers. Butler was only slightly better, shooting 37 percent and making 6 of 22 from long range.