In one of two world title fights on Saturday, May 7, on SHOWTIME CHAMPIONSHIP BOXING at 9 p.m. ET/PT (delayed on west coast), Juan Manuel Marquez (43-2-1, 33 KOs) will defend his International Boxing Federation/World Boxing Association (IBF/WBA) featherweight titles against Victor Polo (34-4-3, 21 KOs), who is the WBA No. 5 featherweight contender. Two-time World Boxing Council (WBC) Champion Jose Luis Castillo (52-6-1, 45 KOs) and World Boxing Organization (WBO) Champion Diego Corrales (39-2, 33 KOs) will collide in a world lightweight title unification bout in the May 7 main event on SHOWTIME.

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