Heavyweight contender Gabriel Gonzaga and lightweight star Evan Dunham are both injured and out of UFC 146. Gonzaga is being replaced by Dave Herman, who is coming off of a TKO loss to Stefan Struve at UFC On Fuel TV I. Dunham is going to be replaced by Jamie Varner, who is a UFC veteran and former WEC Lightweight Champion. UFC 146 takes place on May 26th at the MGM Grand Garden Arena in Las Vegas, Nevada with Junior Dos Santos versus Frank Mir headlining.