Don Heupel, Associated Press
Ottawa left winger Dany Heatley chases after the puck behind the Senators' net Wednesday. He had a goal and an assist against the Sabres.

The Ottawa Senators showed the surging Buffalo Sabres who's boss in the Eastern Conference.

Dany Heatley had a goal and two assists, Martin Gerber made 29 saves and the conference-leading Senators beat the Sabres 5-3 on Wednesday night, snapping Buffalo's season-high six-game winning streak.

"We've played each other so much over the last two years, it doesn't matter who's going good or how the past couple weeks have been going," said Heatley, who had his 16th multipoint game of the year. "Whether they are hot or not, we know it's going to be a tough game."

The Senators certainly made it tough for the Sabres, especially in the second period when they scored three times to take a 3-1 lead into the third. The Sabres tried to claw their way back after Adam Mair cut the Senators' lead to 4-3 with 7:37 left in regulation, but Gerber helped preserve the win with a couple of standout saves while Buffalo was on the power play late in the third.

"They're one of the better teams in the conference, and I think that they think that we are also," Ottawa captain Daniel Alfredsson said. "Both teams can use this as a measuring stick."

RED WINGS 5, BLUES 0: At St. Louis, Chris Osgood stopped 20 shots for his 45th career shutout, leading Detroit to its fifth win in six games. Center Valtteri Filppula scored twice to pace the Red Wings, who improved to 27-7-3 overall. St. Louis, playing in front of its largest home crowd of the season, fell to 18-13-3.

STARS 8, WILD 3: At Dallas, Brenden Morrow had two goals, Mike Ribeiro matched a career high with his 20th goal and added two assists, and Dallas routed Minnesota. Dallas' Mike Modano extended his goal-scoring record for U.S.-born players with the 518th of his career. Niklas Hagman, Stu Barnes, Jeff Halpern and Loui Eriksson also scored for the Stars, 7-1 in their last eight games.

CAPITALS 3, LIGHTNING 2: At Washington, hours after Bruce Boudreau formally got the job he coveted, the Capitals marked the occasion with a feel-good victory. Matt Bradley scored the tiebreaking goal with 2:53 left, and Washington ended a three-game skid by beating Tampa Bay.

ISLANDERS 4, MAPLE LEAFS 3 (OT): Uniondale, N.Y., Mike Comrie scored with 9.6 seconds left in overtime, Wade Dubielewicz made 22 saves in relief of injured Rick DiPietro and New York spoiled Jason Blake's return. Blake spent parts of six seasons with the Islanders before signing with Toronto during the summer.

BLACKHAWKS 5, PREDATORS 2: At Chicago, Robert Lang scored two goals in the third period and the Blackhawks won their season-high fourth straight.

Patrick Sharp, Jonathan Toews and Patrick Kane each had a goal and assist for the Blackhawks. Chicago's Nikolai Khabibulin was sharp and made 30 saves.

RANGERS 4, HURRICANES 2: At New York, Jaromir Jagr scored twice to end a goal-scoring slump and Brendan Shanahan set up a pair of third-period power-play goals to help New York beat Carolina. Chris Drury and Dan Girardi also scored for the Rangers, who snapped a three-game losing streak, winning for only the third time in the last 11 games.

BLUE JACKETS 2, THRASHERS 0: At Columbus, Ohio, Pascal Leclaire made 21 saves for his league-leading seventh shutout and Columbus snapped Atlanta's four-game winning streak.