Gennady Golovkin has yet to compete at the international level.
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 . Later that year he defeated Marco Antonio Rubio to add the WBC interim middleweight title to his collection , and defeated David Lemieux in 2015 to win the IBF middleweight title . In his amateur career , Golovkin won a gold medal in the middleweight division at the 2003 World Championships . The International Boxing Federation ( IBF ) is one of four major organizations recognized by the International Boxing Hall of Fame ( IBHOF ) which sanction world championship boxing bouts , alongside the World Boxing Association ( WBA ) , World Boxing Council ( WBC ) and World Boxing Organization ( WBO ) . The International Boxing Organization ( IBO ) is a non-profit organization that sanctions professional boxing matches and awards world and regional championships .