Fans take photos as Randy Couture enters the arena before his heavyweight championship bout against Brock Lesnar at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Randy Couture, left, and Brock Lesnar face off before their heavyweight championship bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Brock Lesnar drops Randy Couture to the mat during the first round of their heavyweight championship bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Brock Lesnar works one of Randy Couture's pressure points during the first round of their heavyweight title fight Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar took Couture's title with a second-round TKO. View photo »

Heavyweight champion Randy Couture, right, and Brock Lesnar trade punches during their title fight Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Randy Couture tries to throw Brock Lesnar to the mat during their heavyweight title fight Saturday at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Randy Couture drives Brock Lesnar to the fence during the first round of their heavyweight championship bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar, who outweighed Couture by 50 pounds, won by TKO in the second round. View photo »

Challenger Brock Lesnar bleeds from a cut over his right eye during the second round of his heavyweight title fight against champion Randy Couture Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Challenger Brock Lesnar bleeds from a cut over his right eye during the second round of his heavyweight title fight against champion Randy Couture Saturday, November 15, 2008 at the MGM Grand Garden Arena. Moments later Lesnar became champion scoring a second-round TKO. View photo »

Challenger Brock Lesnar hits heavyweight champion Randy Couture with a right behind the ear that knocked Couture to the mat during the second round Saturday, November 15, 2008 at the MGM Grand Garden Arena. A flurry of punches later Lesnar won by TKO. SAM MORRIS / LAS VEGAS SUN View photo »

Brock Lesnar, left, drives Randy Couture to the mat in the second round of their title fight Saturday at the MGM Grand Garden Arena. Lesnar finished Couture off moments later with a flurry of punches to become the UFC's new heavyweight champ. View photo »

Challenger Brock Lesnar gets ready to pounce on champion Randy Couture after knocking him to the ground with a right hand during the second round of their title fight Saturday, November 15, 2008 at the MGM Grand Garden Arena. Moments later Lesnar landed a flurry of punches to score a TKO victory and secure himself the heavyweight title belt. View photo »

Heavyweight champion Randy Couture struggles to get up after enduring a flurry of punches in the second round of his title defense against Brock Lesnar Saturday, November 15, 2008 at the MGM Grand Garden Arena. View photo »

New UFC Heavyweight champion Brock Lesnar gets a kiss from his wife, Rena "Sable" Mero after his TKO of Randy Couture in the second round of their title fight Saturday, November 15, 2008 at the MGM Grand Garden Arena. While Lesnar was the bettors favorite, the near sell-out crowd at the MGM was clearly on Couture's side. View photo »

UFC CEO Lorenzo Fertitta, center, and President Dana White joke with Brock Lesnar that they will have to get him a larger belt after he beat Randy Couture for the heavyweight title Saturday, November 15, 2008 at the MGM Grand Garden Arena. Lesnar won by TKO in the second round. View photo »

Kenny Florian hits Joe Stevenson with a left during the first round of their lightweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena in Las Vegas. Florian submitted Stevenson a few moments later with a rear-naked choke hold. View photo »

Kenny Florian unleashes on Joe Stevenson during their lightweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Florian won by submission in the first round. View photo »

Kenny Florian embraces Joe Stevenson out of respect after he submitted Stevenson in the first round of their lightweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. View photo »

Gabriel Gonzaga pounds Josh Hendricks just before the referee steps in during their heavyweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Gonzaga won by TKO in the first round. View photo »

Heavyweight Gabriel Gonzaga growls for the camera after his TKO of Josh Hendericks in the first round of their bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. View photo »

Dustin Hazelett and Tamdan McCrory trade punches during their welterweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. View photo »

Dustin Hazelett, left, starts to get Tamdan McCrory into an arm bar during the first round of their welterweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. Hazelett used the arm bar to submit McCrory moments later. View photo »

Dustin Hazelett, forces Tamdan McCrory to tap out via an arm bar during their welterweight bout at UFC 91 Saturday, November 15, 2008 at the MGM Grand Garden Arena. View photo »