GEORGE GROVES HIGHLIGHTS SATURDAY'S SHOWTIME EXTREME BROADCAST

Press Release: On Showtime Extreme this Saturday (July 28th), British super middleweight champion George Groves faces Francisco Sierra in an eight-round preliminary fight prior to the main event between Robert Guerrero vs. Selcuk Aydin bout at HP Pavilion in San Jose, Calif. London's Groves (14-0, 11 KOs) will be making his second United States appearance, facing Sierra (24-5-1, 22 KOs) of Tepic, Mexico. Sierra owns wins over Jose Luis Lopez and Donovan George. Also on Showtime Extreme will be junior middleweight Hugo "The Boss" Centeno (14-0, 8 KOs) of California against Ghana's Ayi Bruce (14-7, 8 KOs) who now resides in Albany, New York.