Islanders continue mastery over Bruins with five goals in third period

The East Division-leading Bruins don’t lose much. But they still can’t beat the Islanders.

The Islanders overcame two so-so periods with an impressive five-goal third period in Thursday night’s 7-2 win at Nassau Coliseum. The Islanders, who have won two in a row w on this four-game homestand and are in the midst of nine out of 10 at home, are 3-0-0 against the Bruins.

Semyon Varlamov made 34 saves in his fourth straight start.

Anthony Beauvillier, in his fifth game back in the lineup after missing nine games with a lower-body injury, scored his first regular-season goal in 20 games dating to Feb. 17, 2020, to give the Islanders a 3-2 lead at 5:41 of the third period. Beauvillier swiped the…