LONDON (AP) -- Thiago Silva sent 10-man Paris Saint-Germain into the Champions League quarterfinals on away goals after a 2-2 draw at Chelsea in extra time of a fiery and ill-disciplined game on Wednesday.
Although PSG had striker Zlatan Ibrahimovic sent off in the 31st minute for a challenge on Oscar, the visitors still provided the greater threat at Stamford Bridge.
Gary Cahill had given Chelsea the lead in the 81st minute -- after a 1-1 draw in the first leg -- but former Chelsea player David Luiz headed PSG level to send the game into extra time.
Eden Hazard restored Chelsea's lead from a penalty, but Thiago Silva's looping header in the 114th minute allowed PSG to avenge last season's loss to Chelsea in the quarterfinals.
"Our performance was not good enough," Chelsea manager Jose Mourinho said. "They were stronger than us. They coped better than us with the pressure of the game."
Mourinho had used his pre-match media conference to decry the "aggression" of PSG in the first leg. And referee Bjorn Kuipers's instant reaction to Ibrahimovic's lunging challenge into Oscar was to send off the Sweden forward.
Even though Kuipers was already preparing to brandish the red card, he was surrounded by furious Chelsea players, some demanding a stretcher for Oscar.
Oscar, though, emerged unscathed from the challenge that replays suggested was less reckless than it appeared in real time when both players were sliding in for the ball.
PSG wasn't happy and following protests, Thiago Motta was booked by Kuipers as the game became increasingly heated while lacking much goalmouth action.
But the decisions weren't all going Chelsea's way.
When Luiz swung his right elbow at Costa as the striker advanced on goal, the former Chelsea player went unpunished. And Chelsea's grievances grew stronger when Costa was tripped by Edison Cavani in the penalty area, having already withstood several challenges, but no spotkick was awarded.
Chelsea was failing to test goalkeeper Salvatore Sirigu, who had a comfortable save from Oscar just before the penalty appeal.
The second half was no less stormy -- Ramires was booked for a foul on Motta -- but it was PSG still looking more confident going forward despite its numerical disadvantage.
A chance fell to PSG in the 58th minute when Cavani rounded goalkeeper Thibaut Courtois but he hit the near post from a tight angle.
The Chelsea defense was coming under sustained pressure, and Costa was booked for a sliding tackle on Silva. Luiz was also shown a yellow card for trying to suggest he had been headbutted.
Then the action switched from the hostilities between the players to the goalmouth, with two goals in five minutes.
PSG failed to clear a corner and after Costa missed a shot, Cahill was primed to strike into the net. It was advantage Chelsea, but PSG's requirements hadn't changed -- the visitors always had to score. And they achieved that in the 86th minute when Luiz powered a header into the top of the net from Ezequiel Lavezzi's corner.
And a game already defined by the tempestuous clashes saw Costa, who had already been booked, avoid a red card for pushing Marquinho over before the end of regular time.
In extra time, with Chelsea's strike force bolstered by 2012 Champions League winner Didier Drogba replacing Ramires, the hosts took just five minutes to go in front.
Silva used his raised arm to prevent Kurt Zouma from meeting a cross with a header. This time Kuipers immediately pointed to the spot and Hazard coolly slotted the ball into the net.
Courtois protected Chelsea's lead by tipping over a dipping free kick from Luiz and then making a fine save in the second half of injury time from Silva. But from the resulting corner, Silva's powerful follow-up header flew into the top corner.
PSG advances to the last eight along with Bayern Munich, which advanced by routing Shakhtar Donetsk 7-0 on Wednesday following a 0-0 draw in the first leg in Ukraine.