Alexander Zverev says he will 'see what happens when he gets hot' after a powerful performance against Kei Nishikori at the Madrid Masters.
The German ace was in fine form as he completely overpowered Nishikori, carving out a 6-3, 6-2 success in just 74 minutes.
It was a welcome return to form for Zverev, who disappointed in Munich amid concerns over an elbow injury.
However, he has also warned rivals that there is a lot more still to come, as he still doesn't believe he has reached his best level yet.
“Obviously Kei [Nishikori] is somebody that has done well here, made finals and he’s beaten me on clay before, so I knew I had to come out and play my best tennis," Zverev said.
“I’m definitely very happy with this performance and we’ll see how this tournament goes for me.
“Since Munich I’ve practised my serve a little bit, which I haven’t done in the past month so I think that helped me a lot and I think the outfit also is helpful for the serve.
“But yeah, all in all it was a good match from my side and I hopefully I can continue playing the same way or even better.”
“This (Madrid) and Rome are my two favourite clay court events where I feel the most comfortable and, yeah, as you said, when I get hot, we’ll see what happens.”
Zverev will face British number one Dan Evans next after he beat Australian John Millman.
For more exclusive content from Tennisbuzz, including news, features, trivia, promotions and more, please be sure to sign up for our newsletter below or via our home page.
Why not test your tennis knowledge by tackling one of our fiendish quizzes too?