Novak Djokovic’s former coach and six-time Grand Slam champion, Boris Becker, has admitted he is unsure if the Serb will ever match Roger Federer’s remarkable Grand Slam record, Zeenews report.

Djokovic recently picked up his 15th Grand Slam title with a victory at the Australian Open in January, dominating Rafael Nadal in the final.

Michael Dodge/Getty Images Sport

The 31-year-old is seemingly back to his best, however, Becker, who clinched six major titles between 1989 and 1996 and coached Djokovic from 2013 to 2016, admitted he is unsure if the Serb will reach 20 Grand Slam titles.

Talking to the media, Becker revealed even though Federer hasn’t reached a Grand Slam final for over a year, the Swiss star could still add to his collection before retiring.

The next question is ‘will Novak ever break Federer’s record?

The short answer is that there is a possibility but a lot of things have to happen.

Yes, he won the last three majors but before that, he had a two-year dry spot.

Becker then went on to heap praise on Djokovic, claiming the Serb has his ‘champion’s mindset’ back.

For Novak, it is perfect at the moment. Therefore he is on his way and hopefully, nothing happens in the meantime.

He has a champion’s mindset and that is something you never lose.

He has his work ethic back, as well as his discipline, his desire and his love for the game. When he is on, he is very very good.

Djokovic is currently ranked number one in the world, however, Federer looks set to return to the French Open for the first time in two years when the tournament gets underway at Roland Garros at the end of May.