Tennis legend Pete Sampras believes that Roger Federer, Rafael Nadal or Novak Djokovic will never break Rod Laver’s record of two calendar Grand Slams, Tennis World USA report.

The trio have dominated the game for the past 15 years, with Djokovic recently claiming his 15th Grand Slam after an impressive win against Nadal in the Australian Open final.

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Federer, Nadal and Djokovic have 52 Grand Slam triumphs between them, however, none of the three have achieved a calendar Grand Slam.

And talking to the media, Sampras, who led the list of most Grand Slams won by a man before Federer overtook him, admitted that Laver’s successes in 1962 and 1969 will never be matched.

He’s the most humble champion I’ve ever been around.

His records are never going to be touched. Those two Grand Slams will never happen.

Federer, Nadal and Djokovic will have the chance to add to their remarkable Grand Slam collection at the French Open in May and if Djokovic claims the title at Roland Garros, the Serb will be halfway to a sensational calendar Grand Slam.

Who is the most likely to complete a calendar Grand Slam?

Roger Federer

Rafael Nadal

Novak Djokovic