In an interview to Sdna, the 2001 Wimbledon winner Goran Ivanisevic commented on Stefanos Tsitsipas's potential. Speaking on Monday, just 24 hours after the Greek player's loss to Stan Wawrinka, the Croat said: "He has a quality that just a few have, he is someone who will make big results.
Anyways, he is No. 6 at 20 years and he can go even higher. He is my favourite and he will be world No. 1 I think. He plays with his heart like all the Greek guys. He is so passionate, it's incredible! He is not afraid to go to the net, he has no fear to attack, amazing.
The only thing I do not like is his serve. He has a strange serve. He needs to improve it because he would struggle otherwise. Against Stan Wawrinka, he was broken many times. But he is tall and with a better technique, he will serve better.
I think he will win many Grand Slam titles." Federer said: "I have bad memories from my match against Stan in 2015. He had won in straight sets. On this surface, he is the most dangerous and toughest one for me. But he is having a second life on court after his knee injury because he did not know if he would be able to come back.
It's nice to see him injury-free and play well. We will see, but I hope he does not play like he did in 2015 because at that moment he destroyed the ball. He was unbelievable."