Gennady Gennadyevich Golovkin (Kazakh: Геннадий Геннадьевич Головкин; born 8 April 1982) is a Kazakhstani professional boxer who currently holds the unified WBA (Super), WBC, IBF, and IBOmiddleweight titles. As of May 2017, he is ranked as the world's best middleweight by BoxRec and the Transnational Boxing Rankings Board (TBRB), and second best by The Ring. He is also ranked as the world's second best active boxer, pound for pound, by The Ring; and fifth by BoxRec and the TBRB.
Golovkin won his first major world championship, the WBA interim middleweight title, by defeating Milton Núñez in 2010. He was elevated to WBA (Regular) champion in the same year, and in 2011 would win the vacant IBO middleweight title by defeating Lajuan Simon. In 2014, Golovkin was elevated to his current status of WBA (Super) champion and successfully defended both his titles against Daniel Geale. 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. After Canelo Álvarez vacated his WBC middleweight title in 2016, Golovkin was elevated to full champion and now holds world titles by three of the four major boxing sanctioning bodies.
A calculating pressure fighter, Golovkin is known for his powerful and precise punching, balance, and methodical movement. With a streak of 23 knockouts that spanned from 22 November 2008 to 18 March 2017, he holds the highest knockout percentage – 89.8% – in middleweight championship history. In 2016, he achieved his 17th title defense by knockout, which equalled the record set by Wilfredo Gómez in 1982. Golovkin is also said to have one of the best chins in modern boxing, having never been knocked down or knocked out in a total of 387 fights, neither as a professional nor amateur.