St. Louis carried the play early in the first period, generating a lot of pressure deep in the Edmonton zone.
Things heated up between the two sides when Jean-Francois Jacques hammered Blues forward Peter Sejna against the boards. Matt Walker took exception to his hit and the two players dropped the gloves for a spirited bout.
Dwayne Roloson made a huge save on Petr Cajanek midway through the first as he got a glove on Cajanek's redirection in front of the net, taking away a sure goal.
With St. Louis on their second power play of the period, Petr Cajanek fired the puck past Roloson to give St. Louis an early 1-0 lead.
40 seconds later, Kyle Brodziak picked up a loose puck in front of the Blues net and shot it five-hole past Curtis Sanford to tie the game at 1-1.
After one period, shots on goal were 14-8 for St. Louis.
St. Louis almost took the lead early in the second. With Roloson out of position, several Blues players were in front of the net but couldn't get a handle on the puck.
At the other end of the ice, Robert Nilsson took a pass from Raffi Torres behind the Blues net and wristed the puck from the slot. Sanford dropped down to his knees to make a difficult pad save.
After coming out of the penalty box, Brad Winchester drew a penalty of his own with some strong forechecking behind the St. Louis net. The Christian Backman hooking minor gave Edmonton its third power play of the night.
St. Louis moved in front 2-1 with seven minutes left in the second. Radek Dvorak's cross-ice pass in the Edmonton zone was tipped by the stick of Jason Smith but it still made its way to Jeff Woywikta who chipped the puck past Roloson for his first career NHL goal.
With four minutes to go in the second, Ladislav Smid
took a puck in the midsection while stationed in front of the Edmonton net. He had to be helped off the ice.
Roloson came up with a pair of big stops with seconds left in the middle frame. First, he flashed his glove to deny Eric Brewer on a point-blank opportunity and then slid across to rob Dvorak on the rebound.
St. Louis was outshooting Edmonton 31-15 after two.
Patrick Thoresen almost tied the game eight minutes into the third after rushing towards the net and then attempting to deke Sanford but his shot was stopped. Dvorak then checked Thoresen into the crossbar, getting an interference penalty.
On the ensuing power play, Horcoff picked up a Petr Sykora rebound at the side of the net and shot it into the open cage with Sanford out of position. The goal tied the game at 2-2.
Edmonton and St. Louis both traded chances as the period went on, with action fast-paced and end-to-end. Sanford stopped Nilsson's blast from the right circle on one occasion while Roloson was sharp in denying Brad Boyes off the rush.
Nilsson and Pouliot each had chances in the final minute to put the game away but Sanford was equal to the task.
Following regulation time, the Blues were outshooting the Oilers 39-24.
In overtime, Eric Brewer pinched in deep before picking up the puck in the corner. He skated out in front before backhanding it five-hole past Roloson to give St. Louis the win.NOTES: Shawn Horcoff
returned to the lineup after missing one game with the flu. Joffrey Lupul (flu) was a scratch in his place... Horcoff's third-period power play goal halted an 0-for-30 slump with the man advantage for Edmonton.