9. As early as 2.5 years
Bencic was just 2 and a half years old, when she started hitting tennis balls with her dad in their house’s front garden. It is like she first learnt how to walk on a tennis court.
At age 4, she was training at Melanie Molitor tennis school. Melanie, of course, is the mother of the great, Martina Hingis and played the biggest role in her success on tour.
Bencic also attended the infamous Nick Bollettieri’s tennis camp for 6 months. She writes on her site that this gave her “a taste for tennis on a global stage.”