José Luis Castillo vs. Diego Corrales - Mandalay Bay Casino, Las Vegas, Nevada, May 7, 2005

José Luis Castillo vs. Diego Corrales is a boxing match in Las Vegas, Nevada.

The fight is a 12-round lightweight unification bout between Corrales and Castillo. Corrales, who has a career record of 39–2 with 32 knockouts, is the World Boxing Organization (WBO) champion. Castillo, at 52–6–1 with 46 knockouts, was the World Boxing Council (WBC) champion.