Georges St. Pierre goes for a takedown of Nick Diaz in the main event of UFC 158.

Nick Diaz jabs Georges St. Pierre in the chin during the main event of UFC 158. In the end, St. Pierre defended his welterweight title and picked up a unanimous decision win.

After the main event of UFC 158, Georges St. Pierre defended his welterweight championship via a unanimous decision over Nick Diaz. 

Nate Marquardt looks to break away from Jake Ellenberger in their UFC 158 welterweight battle.

Jake Ellenberger delivers a blow to the eye of Nate Marquardt in the first round of their UFC 158 welterweight bout.

Jake Ellenberger celebrates after gaining a knockout win over Nate Marquardt at the 3-minute mark of the first round of their UFC 158 welterweight bout. Ellenberger picked up his eighth win out of his last nine bouts. 

Carlos Condit strikes Johny Hendricks in the chin during their UFC 158 welterweight bout.

In one of the best fights of the night, Johny Hendricks and Carlos Condit blast away at each other in their UFC 158 welterweight bout. 

Johny Hendricks gets his hand raised with a unanimous decision after his UFC 158 welterweight bout versus Carlos Condit.

Nick Ring drives his fist into the throat of Chris Camozzi during their middleweight fight.

Chris Camozzi delivers a hard left to the jaw of Nick Ring in their UFC 158 middleweight bout. Comozzi went on to win via a split decision.

Chris Camozzi celebrates after pulling out a close split decision win over Nick Ring in their UFC 158 middleweight fight.

Mike Ricci lands a hard left on the jaw of Colin Fletcher during their UFC 158 lightweight bout. Ricci won by unanimous decision.

Patrick Cote and Bobby Voelker fight it out during their UFC 158 welterweight battle.

Patrick Cote and Bobby Voelker fight for position in their UFC 158 welterweight bout.

Mike Ricci is named the winner via unanimous decision after his lightweight bout versus Colin Fletcher. The bout kicked off the UFC 158 main card.

Colin Fletcher has a tight hold on Mike Ricci in their lightweight bout during UFC 158. Ricci won via unanimous decision.

Antonio Carvalho avoids a punch from Darren Elkins in their UFC 158 featherweight bout.

Darren Elkins celebrates after the ref orders a stoppage in the featherweight bout against Antonio Carvalho.

Jordan Mein celebrates after knocking out Dan Miller with 4:42 left in the first round of their welterweight UFC 158 fight. It was the first time Miller had been stopped in his career.

Dan Miller has Jordan Mein locked up early in the first round of their UFC 158 welterweight bout. Mein survived the armbar and went on to knock out Miller at 4:42 in the first round.

Dan Miller is left bloodied and beaten after suffering repeated blows from Jordan Mein in their UFC 158 welterweight bout.

John Makdessi is named the winner by unanimous decision after his UFC 158 lightweight bout against Daron Cruickshank. After a slow start, Makdessi took over during the last two rounds to secure the victory.

John Makdessi strikes Daron Cruickshank in the face during their UFC 158 lightweight bout.

Rick Story celebrates after knocking out Quinn Mulhern in the first round of their welterweight bout in UFC 158. Story moved to 8-4 in the UFC, while Mulhern's loss snapped a three-fight win streak.

Quinn Mulhern delivers a blow to the chin of Rick Story in the first round of their welterweight UFC 158 bout.

TJ Dillashaw celebrates after knocking out Issei Tamura early in round two of their UFC 158 featherweight fight. The win moved Dillashaw to 3-1 in the UFC.

TJ Dillashaw delivers a knee to the face of Issei Tamura in the second UFC 158 bout. Dillashaw knocked out Tamura early in the second round.

George Roop celebrates after defeating Reuben Duran via unanimous decision during the bantamweight division bout of UFC 158.

George Roop throws a left punch at Reuben Duran during the UFC 158 preliminary card's bantamweight bout. Roop went on to win in a unanimous decision.