 Golden Boy Promotions founder Oscar De La Hoya titled the event as "Warriors", and it was to be Katsidis' first time headlining an "HBO World Championship Boxing" broadcast (having twice previously headlined HBO's "Boxing After Dark", against Casamayor and Díaz).Tragedy occurred during Katsidis' pre-fight preparation and training in Thailand, when his brother Stathi Katsidis died on 19 October.In what many observers were anticipating to be a highly fan-friendly fight, Márquez suffered a knockdown in round three from a hard Katsidis left hook.