Nadal tried to put his foot down, becoming more aggressive but was missing and Zverev broke back.
A 44-shot rally, which he won when Zverev missed a backhand, put Nadal ahead again but once more, he was broken as the set reached 2-2.
From then on, the second set became an odd affair, mistakes from both men with both struggling to hold serve, especially Nadal.
Zverev broke for 4-2 only to double fault and hand the break back. The German then broke Nadal for the fourth straight time to go up 5-3. But serving for the set, he began with a double fault and though he led 30-15, he hit two more double faults to let Nadal back in again.
Finally, Nadal held serve for the first time, lifting both his arms up above as he put a volley away to level at 5-5.
Nadal then found another brilliant forehand pass to go up 0-30 but Zverev held and it was then Nadal’s turn to hold, which he did, but as he clinched the game, it was the yell of Zverev which caught everybody’s attention.
The German could not put any weight on his right foot and left the court but inevitably, the match was over. He came back onto court on crutches and the match was done.