Williams set a career high with the performance, hitting 9-of-14 shots from the floor, and distributed 15 assists for the Minutemen (8-0), who off to their best start since going 26-0 to open the 1995-96 season.
Sampson Carter scored 20 points), Raphiael Putney scored 15 and Maxie Esho finished with 12 points, six rebounds, two blocked shots for UMass.
Tyler Haws paced the Cougars (7-3) with 25 points. Matt Carlino had 23 points and six assists.
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