by MMAWeekly.com
The Ultimate Fighting Championship on Monday announced via its website that UFC 79, scheduled for Saturday, Dec. 29 at the Mandalay Bay Event Center in Las Vegas, is completely sold-out.

The main event features a battle between Matt Hughes and Georges St-Pierre for the interim welterweight championship. This marks the third time the two will meet with each having a win over the other.

Hughes was originally slated to face fellow Ultimate Fighter coach and current welterweight titleholder Matt Serra, but Serra had to bow out due to a back injury.

“Obviously, the loss of Matt Serra was brutal, but the great thing about the UFC is that we can put together great fights like Hughes-St-Pierre at a moment’s notice and bounce right back,” said UFC president Dana White. “I have the utmost respect for both Hughes and St-Pierre for stepping up for this fight … the winner is going to face off next year against Matt Serra for the undisputed title.”

Also hi-lighting UFC 79 is a highly anticipated bout between former UFC champion Chuck Liddell and former Pride champion Wanderlei Silva.

The UFC also announced that it would hold a closed-circuit screening of UFC 79 inside the Mandalay Bay Ballroom beginning at 7 p.m. PT.