Isaiah Livers had 22 points and 10 rebounds, and No. 7 Michigan snapped Purdue’s four-game winning streak with a 70-53 victory in West Lafayette, Ind. on Friday.Eli Brooks contributed 11 points and five rebounds for Michigan (13-1 overall, 8-1 Big Ten). Franz Wagner tossed in eight points with seven rebounds and a team-best five assists.Hunter Dickinson added eight points but also made six turnovers.The Wolverines, who never trailed, increased their lead in the Big Ten to 1 1/2 games over second-place No. 4 Iowa and No. 10 Wisconsin.Michigan, which scored 20 points off turnovers, shot 44.6 percent from the field and knocked down six of 15 3-point tries. Livers had half of those 3-point makes.Trevion Williams led Purdue (11-6, 6-4) with 14 points and 11 rebounds. Jaden Ivey added 12 points, five rebounds and five assists.Boilermakers coach Matt Painter announced prior to the game that starter Sasha Stefanovic would miss at least three games after testing positive for COVID-19.Without him, Purdue shot 30.8 percent from the field and made just two of 12 3-point attempts.The Wolverines established a 34-21 lead by halftime behind Livers’ 12 points.