Tampa Bay Lightning players, including Dominic Moore (19) surround goalie Dwayne Roloson (35) as Washington center Nicklas Backstrom, left, skates toward the bench after the Lightning defeated the Capitals 5-3 in Game 4 of their Stanley Cup playoff series.

TAMPA, Fla. — Sean Bergenheim scored two goals and Dwayne Roloson stopped 33 shots as the surging Tampa Bay Lightning completed a series sweep of the top-seeded Washington Capitals with a 5-3 victory in Game 4 on Wednesday night.

Playing on consecutive nights for the first time this postseason, the Lightning extended their winning streak to seven games and advanced to the Eastern Conference finals for the first time since their 2004 Stanley Cup championship season.

For Alex Ovechkin and the Capitals it was yet another bitter postseason disappointment.

Rookie Michal Neuvirth stopped 32 shots for Washington, but Bergenheim scored twice in eight minutes during the second period to build a 3-1 lead that induced chants of “sweep, sweep, sweep” from a sellout crowd of 20,835.

Bruins 5, Flyers 1

Zdeno Chara and David Krejci scored in the opening 63 seconds, and Boston added two more goals in a 95-second span in the second period to beat Philadelphia and take a 3-0 lead in the Eastern Conference semifinals.

Tim Thomas made 37 saves for Boston, which hasn’t reached the conference finals since 1992.

Sharks 4, Red Wings 3

Devin Setoguchi scored 9:21 into overtime to finish a hat trick, and San Jose took a commanding 3-0 lead over Detroit in the Western Conference semifinals.

The Sharks will have a chance to sweep the series in Game 4 on Friday night in Detroit.

San Jose’s Dan Boyle scored the tying goal with 4:08 left in regulation, setting up the Sharks’ second overtime win of the series.