Federer: Here's when I'm gonna retire from tennis.

In an interview he has also talked about retirement for the first time, implying that it can happen next year.

“Now I have an idea of how 2019” will turn out, said former world number one for SRF.

“although you still do not know exactly what will happen this spring on grass terrain, and concrete”, Federer said.

Eight-time Wimbledon winner said he doesn't know if he'll play after 2019.

I am in constant talks with my team and we will see if I have another year or not”, the Swiss said.

Federer is praised as the best tennis player of all time by many experts and ex-tensists. He holds the record for most of the sum grand titles won in history, 20 sosh, four more than Rafael Nadal and six more than Pete Sampras and Novak Djokovic.