The MGM Grand Garden Arena in Las Vegas was announced as the relocated site of Ultimate Fighting Championship's "148" pay-per-view card on July 7, the fighting organization announced.
In a news conference in Rio de Janeiro, Brazil on Tuesday, UFC president Dana White said a scheduling conflict with a planned United Nations conference in late June forced the card to be moved from the South American city to Las Vegas.
The card is scheduled to be headlined by a rematch between middleweight champion and Brazilian mixed-martial artist Anderson Silva and No. 1 contender Chael Sonnen, who earned the title match with a UFC on FOX victory over Michael Bisping.
Silva beat Sonnen in their last match at UFC 117 in August, 2010.
As of this year, Silva has defended his title nine straight times to remain middleweight champion since October 14, 2006.
White also said the card will also feature a bantamweight championship match between Dominick Cruz and Urijah Faber and a light heavyweight tilt between former champs Tito Ortiz and Forrest Griffin.
No ticket sale date has been set for UFC 148.
Tuesday's announcement came more than a week from the third UFC on FOX card, which will feature a lightweight main event between Nate Diaz and Jim Miller.
Coverage of UFC on FOX begins with UFC Fight Night, live from Sunset Station Casino, at 4 p.m., followed by the primetime fight card at 5 p.m. on FOX5.
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