He tied the score early in the second period after Travis Zajac blocked a clearingpass and sent the puck to Clarkson, who found Elias coming down the middle for his 13th goal of the season.
Rather than move the puck to the boards and out of danger, Niskanen attempted a backhand clearingpass up the middle only to send it directly to Porter, who had little trouble flipping a wrist shot by Vokoun for Porter's first goal since March 12, 2012.