Crosby, who has been out since Jan. 5 due to concussion symptoms, scored a goal on his first shot 5:24 into the contest, depositing a backhander into the net.
Steve Sullivan scored and Marc-Andre Fleury notched his second shutout of the season, stopping all 29 shots he saw.
Islanders goalie Anders Nilsson, making the first start of his NHL career, was lit up for five goals on 36 shots.
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