Oleksandr Usyk

Oleksandr Usyk is 25-0, and the résumé might be the cleanest in modern boxing history: undisputed champion at cruiserweight, undisputed champion at heavyweight, Olympic gold in between. The Ukrainian beat Anthony Joshua twice, Tyson Fury twice, and Daniel Dubois twice — every big name his two divisions could offer, all beaten, most beaten again for emphasis.

The style is a paradox opponents never solve: a southpaw who wins with footwork and volume in divisions where everyone else wins with power. Usyk doesn't avoid exchanges — he schedules them, arriving at angles that shouldn't exist for a man his size, throwing combinations in the fourth gear he saves for championship rounds.

Behind the wizardry sits iron: he took Fury's and Joshua's best shots and marched forward, and his 2023 stoppage of Dubois answered the only question anyone had left about his chin and heart. All this while carrying the flag of a country at war — his fights have doubled as national events for Ukraine since 2022.

At 39, The Ring still rates him the world's true heavyweight champion regardless of where the alphabet belts scatter. The all-time-great conversation stopped being hypothetical years ago; the only debate left is how high.