Wladimir Klitschko is a Ukrainian former professional boxer who competed from 1996 to 2017. He is a two-time world heavyweight champion, having held the WBA (Super), IBF and WBO titles, as well as the IBO, Ring magazine, and lineal titles. A strategic and intelligent boxer, Klitschko is considered to be one of the greatest heavyweight champions of all time. He was known for his exceptional knockout power, using a strong jab, straight right hand and left hook, as well as excellent footwork and mobility, unusual for boxers of his size.
Throughout his career, Wladimir defeated 23 fighters for the world heavyweight title, beating a record previously shared between Joe Louis and Muhammad Ali at 21 beaten opponents. Klitschko also holds the record for the longest combined world championship reign in heavyweight history at 4,383 days; the most wins in world title bouts in the post-war heavyweight history at 25; the most wins in unified title bouts and the longest unified championship reign in professional boxing history at 15 title bouts and 14 consecutive defenses respectively; and has the second most total successful title defenses of any heavyweight boxer with 23 (including his first reign as WBO champion), behind Joe Louis (25) and ahead of Larry Holmes (20) and Muhammad Ali (19).
Klitschko fought in 29 heavyweight title fights, more than any heavyweight champion in the sport’s history. He also holds the record of having defeated the most boxers with an undefeated record, at 12, and also defeated 10 current or former world champions throughout his career.
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