NBA playoffs: Celtics overpower Knicks with dominant 22-point victory to get back in East semifinal series

Something had to give.After two highly improbable 20-point comeback victories for the New York Knicks in Boston last week, the Celtics had no choice but to make a stand Saturday in Game 3 of the Eastern Conference semifinals inside Madison Square Garden.Once again, Boston went up early, leading by as many as 25 points in the first half. But this time, the Celtics never let up, holding strong for a 115-93 victory in a series the Knicks still lead 2-1.The Celtics seemed to learn from their mistake