Alex Ovechkin scored two goals - including an empty-netter in the final minute - and Nicklas Backstrom had four points for the Capitals.

The Southeast Division leaders rallied from a 2-0 deficit to stretch their winning streak to five games.

After a scoreless opening period, Scott Hartnell and Braydon Coburn put in power-play goals in the second to put the Flyers ahead.

But, with Theodore en route to 41 saves, the game was tied heading into the third. About 5 1/2 minutes into the final period, Semin put the hosts ahead to stay with his seventh goal of the season.

Red Wings 5, Canucks 4 - Jason Williams scored a power-play goal with 5:03 left in a wild third period, leading Detroit past host Vancouver.

Pavel Datsyuk scored his first two goals of the season for Detroit (4-4-2) in a third period that featured six goals and three comebacks. Datsyuk’s second score put the Red Wings ahead for the first time, but Henrik Sedin scored his second of the game on a five-on-three power play to tie it with 7:57 left.

Avalanche 3, Oilers 0 - Craig Anderson stopped 25 shots for his second shutout of the season, leading Colorado past host Edmonton.

Wojtek Wolski had two goals and Milan Hejduk also scored as the Avalanche (9-1-2) won their third in a row and fifth of their last six.

The Oilers (6-5-1) have now lost three in a row and have not scored in their last seven periods.