Tomas Tatar and Gustav Nyquist scored power-play goals Saturday and the Red Wings beat the New York Islanders 4-1 in Detroit. The Red Wings overcame two second-period penalties and took a 2-0 lead on Brendan Smith’s one-timer with 47 seconds remaining in the period. Lubomir Visnovsky scored for the Islanders on a power play. Red Wings backup goalie Petr Mrazek responded after giving up five goals in a loss at Tampa Bay on Thursday. Pacioretty went to the net to tip Tomas Plekanec’s pass over goaltender Braden Holtby for the winning goal. Mark Stone, Bobby Ryan and Erik Karlsson each had a goal and an assist, and Marc Methot added three assists for host Ottawa.