WBA/WBO lightweight champion Juan Manuel Marquez (L) of Mexico greets a fan as he arrives for a pre-fight press conference in the lobby of the MGM Grand Resort in Las Vegas, Nevada November 23, 2010. Marquez will defend his titles against Michael Katsidis of Australia at the MGM Grand Garden Arena on Saturday. REUTERS/Las Vegas Sun/Steve Marcus (UNITED STATES - Tags: SPORT BOXING)