34 years of the Serrano vs Kazama in Japan
By Hilmar Rojas Erazo 03/04/2014
Serrano faced Japanese host Kiyoshi Kazama and sent him to the canvas in round 13, to retain his title that lost four months later by KO with Yasutsune Uehara to end his four year reign.
Serrano regained his belt on April 9, 1981, when Serrano traveled to Japan to get even Uehara, whom he defeated by unanimous decision.
In 1996, he officially announced his retirement, with a record 50-5-1, 17 KO´s.