is a former professional boxer who held the world junior lightweight championship. Professional boxing career Kobayashi turned pro in 1962 and won the Lineal, WBC and WBA Super Featherweight Title in 1967 by defeating Yoshiaki Numata by 12th-round KO, in a bout where Numata was down once in the 6th and three times in the 12th round and thus Kobayashi becoming the undisputed Super Featherweight champion of the world. He was stripped of his WBA title after failing to fight Rene Barrientos. He defended the title six times before losing the belt to Alfredo Marcano in 1971. He retired later in the year after losing by knockout in the 7th round against Roberto Durán in Panama. See also List of super-featherweight boxing champions List of WBA world champions List of WBC world champions List of The Ring world champions List of undisputed boxing champions List of Japanese boxing world champions Boxing in Japan References External links Hiroshi Kobayashi - CBZ Profile |- |- |- 1944 births Living people World Boxing Association champions World Boxing Council champions The Ring (magazine) champions World super-featherweight boxing champions World boxing champions Japanese male boxers