Kyle Palmieri was roasting in the first quarter, which began in Pittsburgh.
He made it 1-0 for the Islanders just under eight minutes into the first period.
The home team turned the match around, however, and in the middle period, superstar Sidney Crosby was able to make it 2-1 and advantage the Penguins.
But the Islanders returned.
Jean-Gabriel Pageau and Brock Nelson made sure the New York team turned 3-2 at the end of the third period.
But the drama continued when Kasperi Kapanen sent in the equalizer to 3-3 and took the match to extra time.
But the extension was only a few minutes long, because there he reappeared.
Kyle Palmieri.
The American shot 4-3 for the Islanders and 1-0 in the match series, after preparation by, among others, the Swedish-American Oliver Wahlstrom.
The match series continues in Pittsburgh during the night until Tuesday.