Toni Nadal is arguably the most successful coach in tennis history. His nephew, Rafael Nadal, has won 16 Grand Slam titles under his direction.

During the summer, the Spanish coach regularly visits the Rafa Nadal Tennis Centre at the Sani Resort in Halkidiki, Northern Greece. There, he oversees the high-level tennis training offered by the Greek branch of the Rafa Nadal Academy, which is headquartered in Mallorca.

In an interview with Euronews, he said the overall level of tennis globally is lower now than it was 10 or 20 years ago.

But he also believes that Carlos Alcaraz sits comfortably among the top three players — and that Novak Djokovic is the best tennis player of all time.

Watch the video in the player above.