Jennifer Capriati became tennis pro at an age of 13 years 11 months.
Cori Coco Gauff became the tennis pro at an age of 14 years.
Both hail from the United States Of America.
Capriati in her debut at Roland Garros became the youngest ever to make into the list of top ten players at an age of 14 years and 235 days.
Cori Cococ Gauff made her international debut in 2019 March and became the youngest ever debutant in the history of Wimbledon.
Cori had a dream Wimbledon debut she defeated Venus Williams in her debut match.
After Jennifer Capriati in 1991, Cori in 2017 defeated Magdalena Rybarikova at the US Open and became the youngest player to make into the third round of the tournament.
At the age of 15, she is the youngest ever girl finalist at the US Open.
In 2018, at French Open she became the second youngest player to win the junior title.