The meeting, held at the Scotiabank Arena in Toronto, ended in a 4-0 victory for the Islanders.
Scored goals were Scott Mayfield, Andy Green, Brock Nelson and Anthony Beauvillier.
The Russian defender of “Philadelphia” Ivan Provorov was not marked by effective actions.
Islanders goalkeeper Semyon Varlamov spent the entire game in reserve.
The score in the series became 4: 3 in favor of the Islanders, the team advanced to the Eastern Conference final.
Earlier, Khudobin called Radulov a very valuable player.