Steven Hendry is the youngest ever. Previous to him it was Alex Higgins.
When he was 15 Ian Thorpe won the 400 meter freestyle at the world championships. This made him the youngest male swimming world champion ever.
Bobby Fisher
Yulla Habub
The current F1 world champion is Sebastian Vettel from Germany. He is the youngest ever world champion.
Iron Mike Tyson was the youngest heavy weight champion ever at 20 years old.
Randy Orton was the youngest World Heavyweight Champion
Sebastian Vettel
Brock Lesnar won the world heavyweight championship at the age of 24
Stephen Hendry, at 21 years 106 days old in 1990.
Wilfredo Benitez won a professional world title when he was 17 years of age
Sebastian Vettel is the youngest f1 race champion. He holds the following youngest records in formula one: a. He is the youngest ever double, triple and quadruple world champion in formula one history b. He has won 4 consecutive formula 1 drivers titles in his career c. He is the youngest ever driver to score championship points in formula 1 d. He is the youngest ever driver in formula 1 to secure pole position e. He is the youngest ever driver to win a formula 1 race
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