Two fighters scheduled to appear on All Star Boxing's "Battle of the Rising Stars" show suffered medical setbacks and will not participate on this Friday's show. Roberto Estrada, scheduled to meet Karl Noons, suffered a broken thumb in sparring and will sit out the show with hopes of being able to fight again this summer. Sacramento's Velvet Malone, who lost a decision to Estrada last December, will now face Noons. [details]