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For three periods, the Rangers played the Bruins evenly. At the end of regulation, the visitors had 30 shots, to 32 for Boston.
The score was tied, 2-2, and it appeared it could have been one of those games destined to last all night.
But then came overtime. At 2:20, Rangers forward Derek Dorsett was whistled off for interfering with Rich Peverley, and the Bruins went on the power play.
The Bruins didn’t score, but they turned the game on its axis. They pinned the Rangers in their end and peppered goaltender Henrik Lundqvist.
The penalty killers were exhausted, Lundqvist himself was weary, and the Rangers couldn’t get their legs under them. That set the stage for Brad Marchand’s goal at 15:40.