Chaz Williams contributed 20 points as the Minutemen (16-1) notched a sixth straight win.
Maxie Esho came off the bench to add 17 points and seven rebounds.
The Phoenix (10-9) were led by Lucas Troutman, who put in 19 points, and Sebastian Koch, who had 18 points with six rebounds.
NBC reportedly holds celebs hostage to Jimmy Fallon's show
Boston schools pull out free condoms over wrapping complaints