Stefanos Tsitsipas plays 'absolutely world class' on clay, Boris Becker has warned Novak Djokovic ahead of their Roland Garros semi-final.
The Greek star dominated Andrey Rublev in the quarterfinals to move into his second Grand Slam semi-final before his 23rd birthday - a feat matched by only 12 men this century.
He will start the match as second favourite to world number one Djokovic, but Becker, who used to coach the Serb, thinks we could be in for a thriller.
"The young Greek fascinates with his varied style of playing," Becker told Eurosport Germany's Matchball Becker show.
"He is one of the best among the young, wild players.
"Not only does he play absolutely world class on clay, but he has generally improved incredibly well in recent months.
"But he is playing against the second tournament favourite for me, Novak Djokovic.
"That could be a thriller. I wouldn't be surprised about a five-set match".
Stefanos Tsitsipas himself has vowed to fight tooth and nail for a place in the French Open final - a tournament he admits has a special place in his heart.
“It’s about fighting and trying to find solutions at difficult moments," he said after his quarterfinal.
“Roland Garros is a tournament I have been watching since I was a kid and always dreamed of playing on these courts.
“I used to skip classes at school to watch it. That’s how much I like this tournament. It’s a dream come true playing here and in front of the public.”
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?