Tennis legend Roger Federer has said that he is completely focused in his career right now and not thinking about having more kids with wife Mirka.

However, the 36-year-old Swiss added that the "topic" [of more children] is not complete yet and he would deal with it after he hangs up his boots.

Federer spoke about his family plans when he was asked about this pervasive question during an interview with Switzerland's Coopzeitung Magazine.

Federer already has two sets of twins — four-year-old boys Leo and Lennart and nine-year-old girls — Myla Rose and Charlene Riva. He married former Swiss international Mirka in 2009. 

"I do not know myself [when my career will end]. That is why it is currently as good as it is. All are happy and relaxed. We enjoy the time with our four children extremely," Federer told the news daily.

"This topic [more children] is certainly not yet complete, but we are not going to deal with it until I have finished my career."

Federer, who has often spoken about how much of a motivation his family has been to his tennis career, opened up about how his kids react to his exploits on the tour.

My kids get most excited about trophies: Federer

Roger Federer kids
Roger Federer's wife Mirka with their kids at Wimbledon 2017.ADRIAN DENNIS/AFP/Getty Images

The 20-time Grand Slam champion is not sure if his kids understand what he is up to but revealed that they get excited whenever he brings home a trophy.

"They know I play a lot of tennis, but I'm not sure if they know that - I don't know. They won't know what my ranking would be," Federer said.

"They wouldn't know what I'm actually may be trying to do really. They know that there is a trophy involved at some point if I do play well, because they get most excited about the trophies."

"I think probably it would be helpful a few more years for the boys to really remember. The girls, they will always remember at this point, of course. I'm not sure about the boys," he added.

Federer recently spoke about how Mirka talked him out of retirement when was forced to the sidelines for nearly six months in 2016.

He rallied against odds and went on to win two Grand Slam titles — Australian Open and Wimbledon — last year. The veteran defended his Australian Open title but failed in his Wimbledon title defence this year.

Nonetheless, Federer has insisted that he is not eyeing a fairytale finish to his career and that he wants to enjoy his time on the court as he long as he plays.

Roger Federer
File photo of Roger Federer.Michael Steele/Getty Images

Federer has been carefully planning his stops on the tour. He has often been criticised for opting out of the clay court swing for the second successive time this year.

The world number two also revealed that he will be missing Rogers Cup --the ATP Masters 1000 tournament-- starting August 3 in Canada. He is set to be back in action for Cincinnati Masters in the lead up to US Open.