Rafael Nadal’s uncle and former coach Toni Nadal believes that Roger Federer will not win a Grand Slam in 2019, according to a report on the Daily Mail.

Toni believes that the physical demands of five-set matches will prove too much for the ageing Swiss star.

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Federer extended the all-time men’s record for Grand Slam titles when he won the Australian Open back in January, but since then, he has struggled to find winning form.

Toni wrote in his column:

What can we expect from 2019? I find it hard to see Federer lifting another Grand Slam cup.

Obviously, I do not say it for his game, although I do say it for the toughness of the five-set tournaments. I have to confess that I said that on other occasions and the Swiss, repeatedly, surprised me.

Federer was defeated by young German Alexander Zverev in the semi-final of the ATP Finals, with Zverev going on to win the tournament.

With the younger generation starting to show their qualities, Toni believes that it will be hard for Federer to match their levels of fitness during long gruelling matches.

Do you think Federer will win a Grand Slam in 2019?