Video: Junior Dos Santos reacts to fighting Frank Mir at UFC 146

Cigano has a new matchup.

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Frank Mir has replaced Alistair Overeem as the challenger for the heavyweight championship at UFC 146 on May 26.

This is an exclusive moment provided by Zuffa, where UFC heavyweight champion Junior dos Santos learns of his new opponent and gives his initial reaction to the change.

Current UFC 146 card for May 26, taking place at the MGM Grand Garden Arena in Las Vegas:

Main card on pay-per-view (All Heavyweights)

Heavyweight Championship: Junior dos Santos (c) vs. Frank Mir

Heavyweight bout: Cain Velasquez vs. Antonio Silva

Heavyweight bout: Roy Nelson vs. Gabriel Gonzaga

Heavyweight bout: Gabriel Gonzaga vs. Shane del Rosario

Heavyweight bout: Mark Hunt vs. Stefan Struve

Preliminary card (FX and Facebook - Bout placement/order to be determined)

Featherweight bout: TUF 14 winner Diego Brandao vs. Darren Elkins

Lightweight bout: Evan Dunham vs. Edson Barboza

Middleweight bout: Jason Mayhem Miller vs. C.B. Dollaway

Lightweight bout: Jacob Volkmann vs Paul Sass

Welterweight bout: Dan Hardy vs. Duane Ludwig

Light Heavyweight bout: Kyle Kingsbury vs. Glover Teixeira

Featherweight bout: Mike Brown vs. Daniel Pineda