Sources close to former two time junior middleweight champion "Ferocious" Fernando Vargas inform Boxingtalk.com that Vargas returns to HBO on August 20 against WBC junior middleweight champion Francisco "Javier" Castillejo. Castillejo-Vargas will take place in Chicago, IL. We will continue to keep you updated, until then, remember where you heard it first! (12:20 PM EST)