DENVER — Ryan O'Reilly scored 3:55 into overtime, as his shot trickled through the legs of Florida goalie Jose Theodore, and the Colorado Avalanche rallied for a 4-3 win over the Florida Panthers on Wednesday night.

Paul Stastny tied it late in regulation, and Peter Mueller scored twice — his first goals since April 2010. Mueller has been dealing with concussion-like symptoms the last two seasons, missing all of 2010-11 and a good portion of this season.

The Avalanche caught the Panthers on a rush late in overtime, with O'Reilly shooting a puck right at Theodore, who couldn't corral it.

Florida had two breakaway chances in the extra period, but were turned away by Jean-Sebastien Giguere

Stephen Weiss, Marcel Goc and Tomas Kopecky scored for the Panthers, who lost their seventh straight road game.