Gennady Golovkin boxes.
The men 's 2003 World Amateur Boxing Championships were held in Bangkok , Thailand , from July 6 to July 13 . Gennady Gennadyevich Golovkin ( Геннадий Геннадьевич Головкин born 8 April 1982 ) is a Kazakhstani professional boxer who currently holds the unified WBA ( Super ) , WBC , IBF , and IBO middleweight titles . He is also ranked as the world 's third best boxer , pound for pound , by The Ring , fifth by BoxRec , and seventh by the Transnational Boxing Rankings Board . Milton Núñez ( born September 25 , 1987 ) is a Colombian middleweight boxer . The World Boxing Council ( WBC ) is one of four major organizations which sanction world championship boxing bouts , alongside the International Boxing Federation ( IBF ) , World Boxing Association ( WBA ) and World Boxing Organization ( WBO ) .