The loss eliminated the Pacers from the Eastern Conference playoffs.
Nick Young added 14 points for Washington, which is locked into the No. 5 slot in the Eastern Conference after Cleveland's 91-90 victory over Philadelphia Monday.
Danny Granger had 35 points and nine rebounds while hitting seven three- pointers for the Pacers. Mike Dunleavy added with 26 points for Indiana, which played without leading rebounder Jeff Foster, who sat out the game with a bruised right knee.