UFC 66's main event was a championship fight with two of the UFC's biggest light heavyweight stars, Light Heavyweight Champion
Chuck Liddell defending his title against former champion
Tito Ortiz. This fight was first announced by Ortiz at the
UFC 63 weigh-ins on September 22, 2006. The co-main event saw
Forrest Griffin take on "The Dean of Mean"
Keith Jardine. The card also saw the return of former Heavyweight Champion
Andrei Arlovski and
The Ultimate Fighter 3 winner
Michael Bisping's first bout in the UFC since winning that season. During the event, it was made official that
Mirko "Cro Cop" Filipovic had signed a contract with the UFC, and would make his debut with the organization at
UFC 67. The event was the UFC's first show at
MGM Grand Arena since
UFC 56, and was nearly sold-out, producing the highest live gate revenue in North American mixed martial arts history, The disclosed fighter payroll for the event was $767,000. ==Results==