Beauvillier, Islanders beat Lightning in OT to force Game 7

New York Islanders defenseman Scott Mayfield (24) celebrates with teammates after scoring against the Tampa Bay Lightning during the third period of Game 6 of the NHL hockey Stanley Cup semifinals, Wednesday, June 23, 2021, in Uniondale, N.Y. (AP Photo/Frank Franklin II)

The New York Islanders celebrate after scoring in sudden death overtime against the Tampa Bay Lightning to win Game 6 of the NHL hockey Stanley Cup semifinals 3-2, Wednesday, June 23, 2021, in Uniondale, N.Y. (AP Photo/Frank Franklin II)

UNIONDALE, N.Y. — Trailing by two goals in the second period of an elimination game, the New York Islanders kept their composure. They got one goal before the end of the period, and tied it in the third.