Women's tennis: 5 youngest Australian Open champions

#4 Hana Mandlikova

Hana Mandlikova

Czech born Hana Mandlikova was a multiple Grand Slam winner - winning 4 Grand Slam Singles titles, 1 Grand Slam Doubles title as well as the Fed Cup thrice. Mandlikova is the daughter of noted Czechoslovakian Olympian Vilem Mandlik. When the WTA established the junior ranking system in 1978, she became the first player to be ranked Junior World Number 1.

Mandlikova's first Grand Slam title came at the 1980 Australian Open at the age of 18 years, 318 days. She ended Chris Evert's 72 match win streak on clay at the 1981 French Open and also put a stop to Martina Navratilova's 54 match win streak in 1983. Mandlikova was inducted to the International Tennis Hall of Fame in 1994.

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#3 Margaret Court

Margaret Court Smith

The most successful tennis player of all-time, Margaret Court holds many unique records. She is the only player among both Men and Women to have won - all 4 Singles and all 4 Mixed Doubles Grand Slams the same year. She is one of 3 women to have won all 4 Grand Slams across 3 categories.

She won a whopping 192 Singles titles including 22 Grand Slams, 19 Doubles Grand Slam titles, 21 Mixed Doubles Grand Slam trophies, 2 WTA Finals victories and 4 Fed Cups. She holds the record of having won the most WTA titles in a single year - 21. Margaret Court won the Australian Open Singles title a record 11 times, the first of which came in 1960 when she was aged 17 years, 199 days.