LeBron James, scored 35 points to lift Cleveland to a 116-105 victory over Toronto in the opening game of the Eastern Conference semifinals .
Kyle Lowry had 20 points and 11 assists, while DeMar DeRozan finished with 19 points. P.J. Tucker had 13 points and 11 rebounds, Serge Ibaka chipped in 15 points, and Norman Powell finished with 12 points.
The loss dropped the Raptors to 1-12 in playoff series openers.
In a game of wild runs, the Raptors would trail by as little as two points last in the second quarter, and by as many as 25 late in the third.