Roger Federer has called on Olympics organisers to make a final decision as to whether the Games will go ahead in Tokyo this summer.
Japan is battling a surge in coronavirus infections, and a petition calling for the event to be canceled has gathered 350-thousand signatures.
"It's difficult," Federer told Swiss television. "We're not hearing much. That makes me think the Games will happen, even if I've heard that lots of people in Tokyo are against the Games.
"Honestly I don't know what to think. I would love to play in the Olympics, win a medal for Switzerland, that would make me so proud.
"But if that doesn't happen due to the situation, I would be the first to understand.
"But I think what the athletes need is a decision: is it happening or isn't it?
"At the moment, we have the impression that it will. We know it's a fluid situation. And also you can also decide as an athlete if you want to go. If you feel there's a lot of resistance, maybe it's better not to go. I don't know."