Nicklas Backstrom finished off a dominant performance when he scored his third goal of the series with 8:51 remaining in overtime.
Tom Wilson was asked after the game about the penalty he incurred for a big hit on New York's Lubomir Visnovsky. He took the high road with his answer.
Brooks Orpik had a scare when he was cut by a skate, but returned to the ice soon after.
Nicklas Backstrom knew he had to step up to get the Caps back into the series and he delivered in Game 4 on Tuesday.
Nicklas Backstrom's overtime goal has the Caps and Islanders even at two games apiece.