Donovan Mitchell hit a pinpoint shot with 0.3 seconds left and the Cleveland Cavaliers extended their unbeaten streak with a 114-113 victory over the host Milwaukee Bucks on Saturday night. Mitchell scored 30 points for the Cavaliers, who picked up their seventh straight win, their best start to a season since Bill Fitch led them to a franchise-record 8-0 mark in the 1976-77 season.