There is much in his game that was taken from Federer with the one-handed backhand a prime example of it. In a talk with the Diriyah Tennis Cup page, Tsitsipas once again shared his admiration of Federer explaining how unstoppable he was:
"Roger's best years, you know, he was kind of unstoppable. It seemed so going forwards."
"Have a backup plan in case tennis doesn't work out" - Serena Williams speaks on advice given by father that guides her post-retirement life
"He said, I remember, many years ago that 'if you don't improve and if you don't change something in a positive way, the opponents are gonna kind of find out what you are doing and what you've been doing is not anymore as efficient as it was before. So, you always got to think forward, you always gotta be progressive in your mindset.' And that's what he has been doing so well for so many years."
Tsitsipas was in London for his retirement as he would not want to miss it for anything.