Alexander Zverev could be a huge threat at the ATP Finals this year because it's his ideal surface, says Ivan Lendl.
Zverev won the tournament in 2018 and he has found a rich vein of form since the ATP Tour restarted following the enforced coronavirus break.
And, according to Lendl, he will be among the top contenders again this year.
“I understand why it is Zverev’s best surface, sort of medium fast indoors, just like it was in Paris, just like it was in London two years ago when he won," Lendl told the EurosportTennis Legends podcast.
"It comes into his forehead nicely so he doesn't have the high ball and low ball. There is no wind and he can serve much better.
"His percentages of first serve are higher because of no wind and also everything comes into his striking zone.
"That's why he's so much better on that than outside."
Zverev beat Rafael Nadal convincingly at the Paris Masters earlier this month, and Lendl said he was incredibly impressed with what he saw.
“I watched a little bit of Zverev against Rafa from Paris," Lendl said. "And you can see in that match how difficult it is for Rafa [Nadal].
"He can't run around his backhand. He hit more backhands than he ever does in the match.
"He does not have the serve plus forehand that often because the ball comes a bit faster.
"Then when it goes to his forehand it goes fast, flat, and he cannot control the points. And you can see why it's causing Rafa such problems."
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