Rafael Nadal ended his playing career last year. Sky posted videos showing Zverev training with Toni Nadal at Rafael Nadal's tennis academy on the island of Mallorca.

Boris Becker : « Si Toni Nadal est bien le nouvel entraîneur de Zverev, alors Alexander a tout bon. Je trouve cette combinaison très intéressante et j’espère que cela se fera » https://t ...

Toni Nadal was notably on the court with the German in clips from the session. Zverev is coming off a five-set, first-round loss to Arthur Rinderknech at Wimbledon.

Zverev 6-3 4-5* NadalZverev ace? No, the umpire inspects it and it's wide. And Nadal pounces on the second serve, getting on the front foot to make it 0-15. But a big serve draws a long return, 15 ...

Zverev 6-3 7-6 5-3* NadalSome of the tennis in this match has been otherworldly. Fourth seed Zverev has needed to perform very, very well to beat Nadal, which is a sign of how well Nadal has ...

Zverev 6-3 7-6 *1-2 NadalHaving eked out a two-game advantage with that early break, it's really important Nadal holds his serve from now on.He loses the first two points, 0-30 down, but comes ...

Ahhh, Rafa. The crowd is reduced to stunned almost-silence as Zverev wraps up the second set.A huge serve, fairly central aimed at Nadal's backhand, and it's straight into the top of the net.Two ...

Zverev 6-3 3-4* NadalBut Nadal's return just catches the very top of the net. He chastises himself with a choice word or two.Serve and volley, 30-0, but Zverev nets to give his opponent a sniff ...

Zverev's first serve is strong, and Nadal can't play himself back into the point. Zverev's first serve percentage sitting at a fantastic 79% (his tour average is second-highest, with 72%).

Some of the tennis in this match has been otherworldly. Fourth seed Zverev has needed to perform very, very well to beat Nadal, which is a sign of how well Nadal has played, too.