Undisputed, undefeated heavyweight champion of the world Oleksandr Usyk visits Boomer Esiason on Gametime.

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Oleksandr Usyk has held the unified heavyweight championship since 2021 and the Ring magazine title since 2022. He holds the undisputed championship in two weight classes – cruiserweight and heavyweight – and is the third male boxer in history (after Terence Crawford and Naoya Inoue) to become a two-weight undisputed champion in the “four-belt era.”

Usyk was the first undisputed heavyweight champion since Lennox Lewis was stripped of the title on April 12, 2000, and is the first and only cruiserweight and heavyweight boxer in history to hold the world titles of all four major sanctioning bodies – the World Boxing Association (WBA) (Super title), World Boxing Council (WBC), International Boxing Federation (IBF), and World Boxing Organization(WBO) – the four-belt era. He previously held the undisputed cruiserweight championship from 2018 to 2019 and is the first boxer to become the undisputed champion in these two weight classes since Evander Holyfield in 1990. The Ring and the Boxing Writers Association of America named Usyk their Fighter of the Year in 2018 and 2024.