After sustaining the bitter taste of losing his NABF Featherweight Title and his first fight as a professional back in December, Robert “The Ghost” Guerrero is determined to have a sweeter experience when he takes on rugged Mexican Sandro Marcos next Thursday night, May 18, in the scheduled 10-round main event at the “Shark Tank” (home of the NHL’s San Jose Sharks) at the HP Pavilion. [details]