Roig believes Shapovalov has the 'biggest potential' in current Next Generation crop

Roig said that for him Daniil Medvedev and Stefanos Tsitsipas are the ones who have made a difference this year.

While the Canadian is described very well by not only Roig but Nadal and he said that he has things that are not coached in his game.

"Mental toughness comes from behind and you can only get to know the player when you are inside.

This year Medvedev and Tsitsipas marked a difference. Tsitsipas was the one who evolved his game the most. Before we were playing calm against him, this year he surprised me in Australia for his game style, he takes the ball much earlier.

Alexander Zverev has not evolved a lot over the last two years, Dominic Thiem misses less than before... For me, Denis Shapovalov is the player with the biggest potential out of everyone. Rafa described him very well. He has things that are not coached, they are unborn, but I say it from outside.

I do not know him and I do not know what his ambitions are."