New York earned a 1-0 victory over Philadelphia on Tuesday, but needed a shootout to do it at Wells Fargo Center.
New York won as a +155 underdog, while Over-Under bettors who played UNDER the total of 5.5 were rewarded at the payout window.
John Tavares clinched the win with a shootout goal in round 2 for the Islanders.
Evgeni Nabokov stopped 45 of 45 Philadelphia shots in the victory.
Ilya Bryzgalov stopped 18 of 18 shots for the Flyers, but it wasn't enough to earn the victory.
New York scored 0 times on 3 chances on the power play, while Philadelphia went 0-for-3 with the man advantage.
Philadelphia outshot New York 45-18 in the game.
Next game, New York takes its act home to face Montreal looking for another win. For Philadelphia, they head home to face Toronto.