Tre Mitchell had 16 points and three assists for UMass (10-14, 4-7 Atlantic 10 Conference), Sean East II added 12 and Djery Baptiste 10.
Javon Greene had 19 points for the Patriots (13-10, 2-8), who have now lost four consecutive games. Miller added 12 points and Jamal Hartwell II 10.
The Minutemen leveled the season series against the Patriots with the win. George Mason defeated UMass 73-63 on Jan. 22. UMass faces Dayton at home on Saturday. George Mason plays VCU on the road on Wednesday.
For more AP college basketball coverage: https://apnews.com/Collegebasketball and http://twitter.com/AP_Top25
Elements of this story were generated by Automated Insights, http://www.automatedinsights.com/ap, using data from STATS LLC, https://www.stats.com