WBA/WBO lightweight champion Juan Manuel Marquez (L) of Mexico faces off with Michael Katsidis of Australia during a pre-fight press conference in the lobby of the MGM Grand Resort in Las Vegas, Nevada November 23, 2010. Barely a month after the death of his older brother, Katsidis will take on Marquez at the MGM Grand Garden Arena on Saturday. REUTERS/Las Vegas Sun/Steve Marcus (UNITED STATES - Tags: SPORT BOXING)