Severin Luthi, former coach of Roger Federer, believes the Swiss Maestro would have played professional tennis till he was 100 if possible.

Federer worked with Luthi from 2007 till the end of his career in 2022, and the Swiss coach spoke on the former World No.1's life post-retirement.

In an interview with Blick, Luthi elaborated on how Federer was glad he could now focus on family and his foundation after he hung up his racket.

"He enjoys life after his career," said Luthi. "He's always been a world champion at making the best of a situation - cheerful and positive as he is. He can now focus on other things: on the family, building the house, his foundation and the sponsors.

"He no longer has the stress of building up tension before tournaments. I'm sure he'll appreciate that. Because tennis itself was never the problem. He probably would have played to 100 if he could have."