Celtics claim vital win over Knicks in game three

Jayson Tatum hit 22 points for the Celtics [Getty Images]The Boston Celtics dominated the New York Knicks in game three to cut the deficit to 2-1 in their NBA Eastern Conference play-off semi-final.The Celtics blew 20-point third-quarter leads in the first two games of the best-of-seven series in Boston as the Knicks mounted stunning comebacks against the reigning NBA champions.But the visitors made no mistake in New York, moving into a 71-46 lead at half-time and remaining ruthless to see out a