Antino Jackson scored 12 points, Noah Robotham and Kwan Cheatham Jr., had 11 and Pat Forsythe 10 for the Zips (7-2), who led 40-24 at the half. Kretzer had four 3-pointers as Akron finished 15 of 35 behind the arc (43 percent).
Ricky Johnson led Bethune-Cookman (4-5), which shot 27 percent for the game, with 15 points. Mario Moody and Jordan Potts added 12 apiece with Moody grabbing 14 rebounds for his third straight double-double.
Kretzer had the last five points in an 11-2 run that made it 17-11 midway through the first half. Josh Williams hit a 3 at the 2:44 mark to cap a 10-2 run for a 36-21 advantage.