WASHINGTON - Alexander Semin's third-period goal gave the Washington Capitals a 2-1 win over the Boston Bruins on Saturday night.
Semin took the puck at the Capitals' blue-line, streaked down the ice, and fired a shot past goalie Tim Thomas at 11:48. It was his 18th goal of the season and fourth in four games.
The unassisted goal broke a 1-1 tie and snapped Boston's four-game overall winning streak. Coming into Washington, the Bruins had won seven straight on the road.
The Capitals, who had lost their previous two home games after going 18-1-1 in their first 20, dominated play in the third period before Semin broke through.
Jose Theodore stopped 23 shots for his second straight win. Washington beat Pittsburgh 6-3 on Wednesday to end a three-game slide.
The Bruins, who hadn't lost on the road since their previous game in Washington on Dec. 10, were trying to tie their longest winning streak away from home in nearly 16 years.
Thomas, who entered the game with an NHL-leading .930 save percentage, had won 10 of his previous 11 starts.
Boston, which began the day with the NHL's best record, is nine points ahead of Washington for the top mark in the Eastern Conference.
The Capitals had a scary moment late in the game when John Erskine was penalized for elbowing with 1:41 to play. The Bruins pulled Thomas with 1:10 to play, giving Boston a two-man skating advantage, but Washington killed the penalty, allowing only a weak shot on Theodore moments before the final horn sounded.
Marc Savard gave Boston a 1-0 lead at 1:49 of the second period. With Washington's Milan Jurcina in the penalty box, the Bruins controlled the power play. Just 29 seconds later, Savard fired a shot from 25 feet past Theodore for his 15th goal.
Just 1:10 later, Mike Green tied it when he faked Thomas in front of the Boston net, and slapped in a shot for his 12th goal.
Notes: Capitals RW Chris Clark was a healthy scratch for the second straight game. ... C Boyd Gordon (back spasms) and D Shaone Morrisson (lower body) were out for Washington. ... Boston LW Milan Lucic missed his fifth straight game due to a shoulder injury. ... D Aaron Ward was out for the second straight game because of a charley horse. ... The Capitals have never lost three straight at home under coach Bruce Boudreau, who took over last season.