Jesse Morgan had 12 and Williams finished with 10 for UMass (9-3), which has won six straight games. The Minutemen also secured their seventh straight road victory, the program's longest road streak since the 1997-98 season.
UMass led 37-29 at intermission but watched Miami (5-7) open the second half on a 9-2 run, cutting the deficit to 39-38. From there, the teams battled through eight lead changes and five ties until Williams' jumper gave UMass the lead for good, 70-69, with 1:12 left.
Allen Roberts led Miami with 21 points.
COLUMBUS, Ohio -- The All Ohio Sweet 16 tournament featured teams from Ohio, Michigan, West Virginia, Kentucky, Pennsylvania, Indiana and Canada. Here are a few top prospect’s from the weekend’s action:Class of 2017C Kaleb Wesson | Westerville, Ohio/South6-9, 300 Committed to Ohio StateWesson is a big-bodied low-post player with great hands and great feet.
The number of Division I transfers swelled to more than 700 last season. The 2016 version includes ex-Duke guard Derryck Thornton and hundreds of others.
Despite departures that will hurt the frontcourt depth, the Buckeyes return their top six scorers and will have experience in the starting lineup.