Scoochie Smith added 15 points, Steve McElvene 13 and Darrell Davis 10. McElvene also pulled down 11 rebounds.
Alabama fell to 1-1.
The game, which tipped off at 1 p.m., was part of ESPN’s tip-off marathon.
Dayton wraps up its three-game homestand to start the season against William & Mary at 2 p.m. Saturday.