Full name
Sergey Alexandrovich Kovalev

Birthdate
April 2, 1983

Debut
On July 27, 2009, in North Carolina, he technically knocked out Daniel Chavez in one round.

won the world title
On August 17, 2013, at the Motorpoint Arena, Cardiff, Wales, he knocked out Nathan Cleverly in four rounds to become the WBO Light Heavyweight Champion. On November 8, 2014, in Atlantic City, he unified his title with Bernard Hopkins, champion recognized by the WBA and the IBF, whom he defeated by unanimous decision in 12 rounds. On March 3, 2018, at the Madison Square Garden Theatre, he defeated Igor Mikhalkin by technical knockout and regained the WBO light heavyweight belt. On February 2, 2019, at the Ford Center at The Star in Frisco, he defeated Colombian Eleider Álvarez by unanimous decision and regained the WBO light heavyweight title.

Lost His Title
On November 19, 2016, Andre Ward defeated him by unanimous decision and took his IBF, WBO and WBA titles. On August 4, 2018, in Atlantic City, Colombian Eleider Álvarez knocked him out and took the World Boxing Organization light heavyweight title from him. On November 2, 2019, in Las Vegas, the Mexican Saúl “Canelo” Álvarez knocked him out in 11 rounds and snatched the WBO light heavyweight title from him.

On August 4, 2018, in Atlantic City, Colombian Eleider Álvarez knocked him out and took the World Boxing Organization light heavyweight title from him.