Tomas Plekanec scored in overtime as the Montreal Canadiens stunned the Washington Capitals 3-2 Thursday in Game 1 of their first-round playoff series.
Mike Cammalleri and Scott Gomez also scored for Montreal.
Joe Corvo and Nicklas Backstrom replied for Washington.
Jaroslav Halak made 45 saves for Montreal. Jose Theodore stopped 35 shots for Washington.
Game 2 is Saturday in Washington.
