Press Release: On behalf of Lion Heart Boxing Productions, Chalres Presnell has proposed a challenger for WBO welterweight champion Antonio Margarito on August 12, 2006.  Lion Heart represents undefeated Antonio Mesquita coming out of Guaruja, Brazil.  He is a former Brazilian light welterweight champion and winner of two regional titles.  Mesquita sports a perfect record of 32-0 with 25 knockouts and, like Top Rank with Margarito, Lion Heart says it has had great difficulty finding suitable competition for him.  Lion Heart believes Mesquita is ready for a major challenge and that Margarito, one of the premier welterweights of the last few years is a perfect opportunity for Mesquita  Lion Heart says it is in negotiations against other top welterweights, but that its goal with Mesquita is to fight the best. [Editor’s note: Mesquita is not ranked in the top fifteen by the WBO , which means he is currently ineligible to fight for that organization's title].