TORONTO -- Jonathan Bernier
Bernier was beaten by the second shot of the game and struggled the rest of the night - giving up six goals on just 15 shots through the two periods of play before James Reimer took over to start the third.
Brock Nelson, John Tavares, Frans Nielsen, Nikolay Kulemin, Matt Martin and Anders Lee scored for the Islanders (20-12-5) while Thomas Greiss turned aside 30-of-33 shots for the win.
Brad Boyes, Pierre-Alexandre Parenteau and Shawn Matthias had goals for the Maple Leafs (13-15-7), who beat New York 3-1 on Sunday at Barclays Center.