DALLAS (AP) -- The San Jose Sharks suddenly look like a No. 8 seed again.
Playing their first game since eliminating top-seeded St. Louis, the Sharks did little right in losing 4-0 to the Dallas Stars in the opener of their second-round series Friday night.
San Jose took just four shots in the first period and failed to get off any on the first three power plays. Steve Shields allowed goals on two of Dallas' first six shots, then gave up two more goals in a 1:55 span early in the third period.
''This was our worst performance of the playoffs,'' center Vincent Damphousse said. ''We were flat the whole game.''
Stars goalie Ed Belfour stopped 18 shots for his ninth career postseason shutout and second of these playoffs. Dallas is 4-0 at Reunion Arena, which will be the site of Game 2 of the best-of-seven series Sunday.
''I don't think you can evaluate Game 1 for the visiting team,'' Dallas coach Ken Hitchcock said. ''In Game 1, the home team should be expected to win, especially when you've had a layoff. I've found for our team, in our building, the tougher game has always been Game 2.''
Today's playoff games had Pittsburgh at Philadelphia, Detroit at Colorado and New Jersey at Toronto. The Penguins, Avalanche and Maple Leafs had 1-0 leads in those series.
Dallas was buoyed by the return of defenseman Sergei Zubov, the triggerman on the Stars' power play.
Zubov assisted on goals in two of their first three chances with the man advantage; the unit was 2-for-26 in the first round, which he missed because of a knee injury.
''When he's able to start with the puck, it opens things up for everyone,'' said Mike Modano, who scored the first power-play goal. ''He really dictates the speed of the game.''
Dallas had a six-day layoff, while San Jose was coming off a Game 7 victory over top-seeded St. Louis on Wednesday. The mental letdown and added physical toll caught up to the Sharks more than rustiness affected the Stars.
''We didn't play with as much emotion,'' Shields said. ''We need to play more aggressively.''
Stars captain Derian Hatcher said the layoff was a factor for Dallas.
''I know can we can go up a notch,'' he said.
Dallas led 1-0 after one shot when Aaron Gavey slid the puck under Shields just 5:45 into the game. It was 2-0 later in the period on Modano's goal, which came while Todd Harvey was in the penalty box for high-sticking.
Zubov's second assist helped Joe Nieuwendyk make it 3-0 early in the third period. Brenden Morrow got the fourth goal by getting a piece of a slap shot by Derian Hatcher.
San Jose went 0-for-6 on the power play after going 6-for-35 in the first round. The Sharks have allowed 10 power-play goals in eight playoff games.
''We've got to get better on the power play,'' forward Mike Ricci said. ''Special teams will be very big in this series.''
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