Top 10 KO's in UFC History

It was the grudge match to end all grudge matches, a packed house saw Chuck Liddell and Tito Ortiz finally get it on in the main event of UFC 47 after months of Tito avoiding to sign the fight.

The UFC middleweight champ Rich Franklin puts his belt on the line for the first time against a top contender, Nate Quarry. Quarry comes into the fight with only one loss in his career and if he leaves with only one loss, he will also leave with the belt.

Their first fight ended in a controversial decision, but Lyoto Machida and Mauricio Rua are back to give the fans the rematch they have been waiting for. Both men have vowed to leave the judges out of the equation, so we expect to see a brilliant finish.

In his first title defense since submitting Pat Miletich at UFC 31, Carlos Newton looked to find similar success against future UFC Hall of Famer Matt Hughes. Relive one of the most exciting knockout's in the history of the UFC.

The record setting UFC 52 - Couture vs. Liddell 2 saw The Ultimate Fighter coaches clash for the UFC light-heavyweight title as champ Randy Couture faced Chuck Liddell.

The coaches collide at UFC 100 when former PRIDE Champion and Two-time Olympian Dan Henderson faces off with the improving dynamic and exciting fighter, Michael 'The Count' Bisping.

After a dominating performance his first time inside the Octagon�, Mirko Cro Cop took on the well rounded Gabriel Gonzaga. Though it would be Gonzaga's night as he took out Cro Cop with one of the most vicious knockouts in UFC® History.

If this battle between British submission artist Terry Etim and Brazilian Muay Thai machine Edson Barboza is typical of the matchups we can expect from the lightweight division in 2012, it's going to be an unforgettable year at 155 pounds.

A long-overdue title matchup between Anderson Silva and Vitor Belfort finally reaches the Octagon. One spectacular fighter...

Middleweight champion Anderson Silva returns to Brazil to ready himself at home for the toughest test of his career; meanwhile, Long Island's Chris Weidman works day in and day out in the hopes of becoming the next UFC Middleweight champion.