Eight days after letting a win slip away against the Golden State Warriors, the Celtics were able to finish the job against another tough Western Conference opponent. Kyrie Irving had 30 points and 11 assists as Boston overcame big games from Oklahoma City stars Paul George and Russell Westbrook to snap the Thunder's seven-game win streak in a 134-129 thriller on Sunday. Boston has won four straight since a 115-111 home loss to the Warriors on Jan. 26 and has won nine of its last 10 games overall.