Jannik Sinner won the 2021 Citi Open, making history as the first ATP 500 champion under the age of 18. He was also involved in tennis, football, and skiing as a kid. After cracking the top 100 ...
It was his father, Johann Sinner, who pushed him to get back to tennis and develop his skills to compete at a higher level. At the age of 13, Jannik gave up skiing and football to prioritize his ...