St. Louis got goals from Brad Boyes and Patrik Berglund for a 2-0 lead the first intermission, but would not find the back of the net anymore against Edmonton goalie Dwayne Roloson.

Andrew Cogliano's sixth goal this season made it 2-1 at 15:03 of the second period, and Sheldon Souray's eighth at 18:30 created a 2-2 tie.

Penner (power play) put Edmonton ahead 3-2 just 20 seconds into the final period, and Horcoff's sixth at the 2:59 mark capped the scoring.

Roloson made 27 saves on 29 shots for the Oilers, who had lost six of seven.

Manny Legace was beaten four times on 22 shots for the Blues, who had won three of their previous four outings.

On the power play, Edmonton went 1-for-4, while the Blues went scoreless on four chances.