 In the Raptors' second-round playoff series against the Cleveland Cavaliers, Lowry sprained his left ankle in the third quarter of Game 2 and aggravated the injury while trying to warm up for Game 3.He was not active for Game 4 and thus could not assist the Raptors in trying to avoid a series sweep; with a 109–102 loss to the Cavaliers in Game 4, the Raptors bowed out of the playoffs with a 4–0 defeat.Following the playoffs, Lowry declined his $12 million player option for the 2017–18 season and became an unrestricted free agent.