Anders Lee scored twice in the third period but the Islanders were unable to sweep a home-and-home series with a 3-2 loss to the Penguins on Sunday night at PPG Paints Arena. Slow starts in each of the first two periods and a special teams’ disadvantage proved the difference.

Casey Cizikas and Anders Lee each scored twice and the New York Islanders beat the Pittsburgh Penguins 6-3 on Saturday night. Jean-Gabriel Pageau and Anthony Duclair also scored, and Mathew Barzal and Alexander Romanov each had two assists for New York,

The Islanders’ dogged work for the opening 10 minutes of the second period helped make good on Roy’s promise on Saturday night. They scored three goals during that stretch — those goals the result of won battles, races, and every inch of contested ice — to fuel a 6-3 win over the Penguins at USB Arena in Elmont, N.Y.