Each team sent 12 players to the shootout but Bradley was the only player on either team to beat the goaltender.
It didn't take Alexander Ovechkin long to make his presence felt - 30 seconds into the game. As Dwayne Roloson tried to play the puck at the side of his net, he was pressured by Ovechkin and coughed it up behind the net. Ovechkin tried to bank the puck in off Jarret Stoll in front of the net but it hit his skate and went wide.
Washington had another good chance about a minute later but Roloson made the initial shot on a wrister from the left circle and then Brooks Laich bounced the rebound off the outside of the post.
A minute after that, it was Kolzig's turn to shine as he made a good pad save off Andrew Cogliano in close after he one-timed a cross-ice feed from Fernando Pisani.
With Washington on the power play. Steve Staios slashed Viktor Kozlov in the corner of the Edmonton zone but after his stick broke on the play, the referee mistakenly thought it was Kozlov that slashed Staios and assigned a penalty to the Caps forward.
On the ensuing four-on-four situation, Tomas Fleischmann stripped the puck from Robert Nilsson and broke in alone before backhanding it off the crossbar behind Roloson.
When the Oilers received their power play they capitalized seconds after Kozlov stepped out of the box. Kolzig had trouble handling Sheldon Souray's initial blast from the point but Shawn Horcoff pounced on the rebound and slipped it in low blocker side to give Edmonton a 1-0 lead.
Horcoff, Penner and Hemsky broke into the Caps' zone on a three-on-two rush. Penner's picked up the puck and shot it just wide of the goal but Washington received another penalty on the play.
On the power play, again Souray's big shot played a role as his blast was kicked right out to Nilsson who fired the puck in to make it 2-0.
Edmonton had 11 shots on goal and Washington had eight after one period.
1:01 into the second period, Nicklas Backstrom put in a rebound as Kozlov created havoc in front of the Oilers net. The goal cut Edmonton's lead to 2-1.
38 seconds later, Ovechkin snapped a shot from the left circle that beat Roloson and tied the game up at 2-2.
Edmonton regained their lost momentum when they went back on the power play. Hemsky, Horcoff and Penner worked a nice three-way passing play that ended with Horcoff feeding Penner at the top of the crease. He redirected it past Kolzig to give Edmonton the lead once again.
A series of penalties gave Washington a four-on-three power play just past the midway point of the second.
First, Horcoff was sent off for tripping and then five seconds later Alexander Semin received a slashing minor. A minute later, Stoll took two for slashing to give the Capitals the man advantage once again.
Ovechkin made an incredible pass off the left side boards to Mike Green at the right circle. His shot beat Roloson and tied the game at 3-3.
On the next shift, Kozlov blasted a shot from the high slot that Roloson had to be sharp in turning away.
Washington scored its fourth goal of the period with 51 seconds remaining in the middle frame. Alexander Semin banked the puck off the back of Roloson's leg and into the net to give the Caps their first lead of the night at 4-3.
Shots on goal after two periods were 25-17 for Washington.
In the opening minute of the third, Reasoner set up Pisani in front and Kolzig made a pad save to keep his team in front.
Edmonton started to put on the pressure about eight minutes into the third. First, Smid made a great play to keep the puck along the side boards. He found Horcoff in the slot whose shot rang off the post behind Kolzig.
The Oilers continued to put on the pressure and Horcoff had the puck on his stick again in the high slot. This time he made no mistake, wiring a laser past Kolzig to tie the game at 4-4.
While on the penalty kill, Ethan Moreau made a nice play to create a scoring chance. He spun off his defender and shot it on net as he was falling to force Kolzig to make a tough save.
Dwayne Roloson made a huge save with about two minutes left in overtime. Tomas Fleischmann had a clear cut breakaway and tried to go glove side on the OIlers goaltender but he would have none of it, knocking away the puck.
Edmonton had a breakaway of its own about a minute later. Jarret Stoll skated in on Kolzig and ripped it on goal. The Caps netminder made the save and then denied Staios on the rebound from the point.
NOTES: Horcoff's goal increased his and Ales Hemsky's scoring streaks to six games... Joni Pitkanen left the game in the first period with a right knee injury.