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Karl Mildenberger

1937 – 2018

German boxer

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About Karl Mildenberger

Lived 1937 – 2018 (aged 80). Karl Mildenberger was a German boxer.

Karl Mildenberger (23 November 1937 – 4 October 2018) was a German heavyweight boxer. He was the European heavyweight champion from 1964 to 1968, during which he retained the title six times. He unsuccessfully challenged Muhammad Ali for the world heavyweight title in September 1966, and was the first Southpaw to challenge for the Heavyweight Championship.

Biography Mildenberger learned the fight trade growing up in Occupied Germany. A cousin of his father's, a former boxing champion during the Third Reich, began Karl's fistic education; he then joined the boxing programme run by FC Kaiserslautern. He eventually displayed enough promise to be sent to Mannheim for training, as Mildenberger lived in the French Sector of the occupation, which forbade the practice of prizefighting; Mannheim, in the American Sector, had no such restriction.

Mildenberger lost his first fight for the European heavyweight title when he was knocked out by Welsh boxer Dick Richardson in one round in April 1962. Mildenberger rebounded with wins over Joe Erskine, Archie McBride, Joe Bygraves and a knockout win over Billy Daniels. Mildenberger then got a draw with highly ranked Zora Folley in April 1964. Later that year, he scored a first-round knockout over Sante Amonte to capture the European heavyweight title.

After defending his European title three times, Mildenberger fought Muhammad Ali for the world heavyweight title in September 1966. Mildenberger, the first southpaw to fight for the world heavyweight title, frustrated Ali for most of the fight, but ultimately lost by TKO when the referee stopped the fight at 1:28 of the twelfth round following a flurry of punches by Ali. Years later, Angelo Dundee said a tenth round punch to the liver area hurt Ali, whose ability to withstand body blows was legendary.

In 1967, Mildenberger participated in a tournament staged by the World Boxing Association to determine the new heavyweight champion after Ali was stripped of the title for refusing induction into the US military draft. In the first round of the tournament, getting off the deck, he lost to Oscar Bonavena by a clear twelve-round decision.

Mildenberger was not the same afterwards, and was knocked out by contender Leotis Martin in seven rounds (April 1968). Subsequently, in September 1968, his career ended when he lost the European heavyweight title to Henry Cooper by eighth round disqualification after headbutting his opponent. Mildenberger has said of his timing of retirement, "If I had retained the title, I would have relinquished it. Win, lose or draw, I would have retired, anyway. ... This was the end. I was unharmed. No terrible things had happened to me."

Mildenberger worked as a lifeguard after his retirement from boxing. He died at the age of 80 on 4 October 2018.

Professional boxing record Result Record Opponent Type Round Date Location

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Important facts

Birth century
Occupation
Nationality
Awards
Order of Merit of Rhineland-Palatinate

People in Karl Mildenberger's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Karl Mildenberger's

Frequently asked questions

Who was Karl Mildenberger?

German boxer (1937–2018)

When was Karl Mildenberger born?

Karl Mildenberger was born on 23 November 1937 in Kaiserslautern.

When did Karl Mildenberger die?

Karl Mildenberger died on 4 October 2018 in Kaiserslautern.

What was Karl Mildenberger's occupation?

Karl Mildenberger was a boxer.

What nationality was Karl Mildenberger?

Karl Mildenberger was German.

Sources & further reading

· Wikipedia: Karl Mildenberger

· Wikidata: Q73025

· DBpedia: Karl Mildenberger

Cite this page

APA: Biography.guide. (2026). Karl Mildenberger. https://biography.guide/karl-mildenberger/

MLA: "Karl Mildenberger." Biography.guide, https://biography.guide/karl-mildenberger/.

Chicago: "Karl Mildenberger." Biography.guide. https://biography.guide/karl-mildenberger/.

Data last updated: 2026-09-22 · Spot an error? Report a correction.

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