Press Release: Undefeated Leopoldo Gonzalez of Tijuana, Mexico, and Samuel Lopez of Phoenix, will meet in the twelve-round main event of “Guilty Fight Night Boxeo de Campeones” card promoted by Guilty Boxing Friday, May 13, at the Orleans Coast Hotel & Casino in Las Vegas, Nev.  This card, in the 7,000-seat Orleans Arena, will be televised on ESPN Deportes. The bout between the 21-year-old Gonzalez and the 31-year-old Lopez is a matchup between puncher and boxer.  The hard-hitting Gonzalez lists a record of 13-0 with nine knockouts while the slick-boxing Lopez has a mark of 15-3 with five knockouts. Gonzalez has five wins on Guilty Boxing cards, including his most recent victory March 11, a ten-round unanimous decision over Arturo Bracamontes.  Lopez lost to current WBO titlist Fernando Montiel last September 10 in Stockton, Calif.  The ten-round semi-main event matches super middleweights Jose Juan Vasquez of San Juan, P.R., and Ricardo Olmeda of Guasave, Mexico.