DeMar DeRozan scored a season-high 41 points, Kyle Lowry had 24 and the Toronto Raptors rallied to end the Boston Celtics’ four-game winning streak with a 114-106 victory Tuesday night. DeRozan added 13 rebounds for his second double-double of the season, and Jonas Valanciunas had 18 points and a career-high 23 rebounds.