Tags: Boxer.
Juan Domingo Roldán (born March 6 1957) is an Argentine former boxer whose nickname was Martillo (Hammer). Roldán was very famous across Latin America during the 1980s many articles about him appearing on Ring En Español magazine.Roldán born in Freyre Córdoba Province Argentina province made his professional debut December 8 1978 in San Francisco Argentina against Jorge Servin winning by knockout in round one.