Stefanos Tsitsipas believes that the Hawk-Eye Challenge should be added on clay as well as there were many doubtful calls during his match against Stan Wawrinka. "I just think it's fairer", said the Greek about introducing the Hawk Eye.
On how he feels, after a five-hour match, Tsitsipas added: "I feel exhausted. I don't know. Never experienced something like this in my life. I feel very disappointed at the end. Long time that -- long time since I cried after a match, so emotionally wasn't easy to handle.
I will try to learn from it as much as I can. I was so close, so close. I give him room to do whatever he likes, all those break points. So many break points. So many. Didn't play. I was expecting someone else to play it for me. I didn't play."
Asked what he hopes to learn from the match, Tsitsipas replied: "I have no idea. My mind is so empty right now. I cannot even think, so I don't know. I have converted five break points out of 22, zero over eight in the fifth.
When it will change, I will become a different player." On how it feels to lose a five-hour match, he said: "Worst thing in tennis. It's the worst feeling ever. Especially when you lose. You don't want to be in my place."