The Oilers just finished killing off a penalty at the start of the sixth period and carried that momentum to the eventual game winner.
attempted a wraparound but the puck slipped into the slot where Horcoff banged it by Toskala to send everyone home happy.
"It took them six periods to beat us," said a defiant Sharks head coach Ron Wilson. "We'll bounce back. We've been a resilient team all season long."
The San Jose head man felt that San Jose didn't respond well to the Edmonton crowd and played much more to the outside than Game 1 and 2 at home.
"We didn't drive at all, we played on the perimeter. We've got to go to the net," he said. "These phantom goalie interference calls have gone to our head."
For the entire overtime, the Oilers shortened their bench -- already short after Georges Laraque got a game misconduct for boarding in period two. Brad Winchester and Rem Murray didn't see any ice time in the extra frames.
"You're always concerned about that," said Oilers assistant coach Charlie Huddy. "Everybody dug in and did what they had to do."
With a boisterous 16,839 fans at Rexall Place behind them, Edmonton charged out of the gates and poured on the pressure early, firing the game's first four shots on Sharks goaltender Vesa Toskala.
Their hard work and forechecking drew the game's first penalty with Ville Nieminen being sent off for tripping.
On the power play, Edmonton's best chance came on a wraparound by Raffi Torres but Toskala was able to squeeze his pads against the post to make the save.
After the penalty expired, the Oilers continued to pour on the pressure. At one point, they had the Sharks pinned in their own zone for close to two straight minutes.
With shots 9-0 Edmonton, the Oilers went on the power play again. Alyn MacAuley cross-checked Brad Winchester when he went for a rebound at the side of the net.
On that power play, Edmonton finally capitalized to take a 1-0 lead. Marc-Andre Bergeron teed up a shot from the point that deflected off Patrick Marleau in the high slot before beating Toskala top corner.
The Oilers continued their relentless attack, outshooting San Jose 13-0 through the game's first 13 minutes. Joe Thornton came close to getting the Sharks' first shot but Jason Smith dove to knock the puck away from him.
San Jose finally got its first shot with 4:42 to play in the opening frame.
After one period of play, the Oilers were outshooting San Jose by a wide margin at 15 to 2.
1:09 into the second, Patrick Marleau scored to tie the game at 1-1. Josh Gorges took the initital shot which was stopped in front by Roloson but Marleau was standing at the top of the crease where he scooped up the rebound and backhanded it into the open cage.
Just before the midway mark of the game, Patrick Rissmiller took a Joe Thornton pass from the slot and wristed it low stick side past Roloson.
With 8:52 remaining in the period, Ryan Smyth
was clipped in the face with the puck on a clearing attempt by Chris Pronger.
Two minutes later, Georges Laraque absolutely crushed Jonathan Cheechoo into the boards and received five minutes for boarding and a game misconduct.
Edmonton's penalty killers did an outstanding job not allowing the Sharks to get set up for most of the major penalty. After two-and-a-half minutes, San Jose finally got some chances and with their best one rang a shot off the right post behind Roloson.
Joe Thornton took an interference penalty seconds later to cut the power play down to 44 seconds.
Shots in the second were 8-3 Sharks and 18-10 Oilers overall through 40 minutes.
Edmonton had a great chance to tie it up early in the third. Michael Peca avoided a check from Kyle McLaren before dishing it to an open Raffi Torres, who was denied low by Toskala.
8:02 into the third, Toskala made a brilliant glove save off Michael Peca. Peca blasted it on a rope for the top corner but the Sharks netminder shut the door.
Four minutes later, Raffi Torres took the puck and blazed down the left side before wiring a shot from the left faceoff circle just over the glove of Toskala to tie the game at 2-2.
After the goal, Edmonton started to take over the game again with the crowd behind them fully. Ethan Moreau whacked at a centering attempt by Stoll but Toskala stopped the rolling puck.
Shots in the third were 9-6 Edmonton.
The Oilers had the first good chance of the extra frame 2:30 in. Peca won the draw straight back to Jason Smith who blasted it from the top of the right circle. Toskala made the save but had trouble handling the puck.
Seven minutes into the OT period, Steve Staios was held up by Christian Ehrhoff while driving to the net putting Edmonton on the power play.
Edmonton came close several times with the man advantage. Toskala kicked out a Spacek one-timer from the right circle and Smyth had a good chance alone in front but couldn't bang it home.
With eight minutes left in the first OT, Moreau and Samsonov broke in on a two-on-one opportunity. Moreau elected to shoot it and Toskala had to make a difficult save.
Edmonton was outshooting San Jose 9-2 in overtime through the first 12:26.
With time winding down in the first overtime period, Roloson had to make a huge stop from point-blank range after Bernier one-timed a Marleau pass on net.
Shots in the first overtime were 16-6 for Edmonton.
Roloson was forced to make the first big stop of double OT, denying Nils Ekman on a partial break as he tried to deke Roli with a backhand move.
Coming back the other way, Ethan Moreau had a great shift where he almost scored on a slapshot off the left side boards while breaking into the San Jose zone then followed that up by levelling Christian Ehrhoff with a nice open-ice check.
With seven minutes to play in overtime two, Roloson made a brilliant glove save on Jonathan Cheechoo to preserve the tie. Two minutes later, Toskala denied Torres in the slot.
With 1:11 to go in the second overtime, Stoll was sent off for hooking to give San Jose a chance to end it on the power play.
Edmonton went with the same lineup as Game 2 while San Jose inserted Alyn McCauley in place of Milan Michalek (upper body)... Pronger's assist on the Torres goal was his first point of the series... It was San Jose's first overtime and Edmonton's third of these playoffs. It was also the Oilers' third double-overtime game and tenth in their history in addition to being the third-longest game all-time... It was only the second double-overtime game in Sharks history and was also the longest game in the team's 15-year history... The second-longest game in Sharks history was held on May 18, 1995 when the Sharks defeated Calgary at the 1:54 mark of double OT on a goal by Ray Whitney... Edmonton's shots on goal total marked a new team record. The previous best was 54, set April 4 1984 vs. Winnipeg.