Vitali Klitschko - Dr. Ironfist |Highlights|Training|

Klitschko is a three-time world heavyweight champion, the second-longest-reigning WBC heavyweight champion of all time, has the fifth-longest combined world championship reign in history at 2,735 days, the third-longest individual WBC heavyweight title streak of all time at 9 consecutive defenses, and the fourth-longest combined title streak in the modern heavyweight history at 15 title bouts. He held the WBO title from 1999 to 2000; the Ring magazine title from 2004 to 2005; and the WBC title twice between 2008 and 2013.

Standing at 2.01 metres (6 feet 7 inches), Klitschko was renowned for having exceptional ring dominance. With an 87% knockout percentage, he holds one of the highest knockout-to-fight ratios of any world champion in heavyweight boxing history, while also possessing a highly durable chin. His two losses came via a shoulder injury and a deep cut above his eye, both of which were recorded as stoppages rather than outright knockouts; in both fights he was leading on the judges' scorecards.

Klitschko is the only heavyweight boxer to have reigned as world champion in three different decades. Along with Oliver McCall and Nikolai Valuev, he is also the only world heavyweight champion to have never been knocked down in any fight. Klitschko and George Foreman are the only heavyweight boxers in history to defend a world title after turning 40.[15] Being the first professional boxing world champion to hold a PhD degree, and in reference to his punching power, Klitschko's nickname was "Dr. Ironfist". His younger brother, Wladimir, is a former unified world heavyweight champion. From 2006 until 2015, Vitali and Wladimir dominated heavyweight boxing, a period typically known as the "Klitschko Era" of the division.