Left-winger Max Pacioretty scored with 42.6 seconds remaining in the third period as the Montreal Canadiens completed their first playoff series sweep in 21 years with a 4-3 win over the Tampa Bay Lightning.
Pacioretty pushed Thomas Vanek's shot between Lightning goalie Kristers Gudlevskis's pads to advance Montreal to the second round of the playoffs, where they will face either Boston or Detroit.
Elsewhere, Goal-tender Tuuka Rask made 22 saves for his fourth career playoff shutout and the Boston Bruins blanked the Detroit Red Wings 3-0 to seize a 2-1 lead in the first round playoff series.
Centre Patrice Bergeron scored a goal and added an assist and defenseman Dougie Hamilton and right winger Jordan Caron also scored for Boston, the Eastern Conference's top seed.
Goal-tender Henrik Lundqvist made 31 saves and the New York Rangers beat the Philadelphia Flyers 4-1 in Game Three of their first-round playoff series.
Patrick Marleau scored at 6:20 of overtime as the San Jose Sharks defeated the Los Angeles Kings 4-3 to snatch a commanding 3-0 lead in their first round series.