Lightweight boxer Michael Katsidis of Australia listens to speakers during a pre-fight press conference in the lobby of the MGM Grand Resort in Las Vegas

Lightweight boxer Michael Katsidis of Australia listens to speakers during a pre-fight press conference in the lobby of the MGM Grand Tuesday, November 23, 2010. Barely a month after the death of his older brother, Katsidis will take on WBA/WBO lightweight champion Juan Manuel Marquez of Mexico at the MGM Grand Garden Arena on Saturday.