Stefanos Tsitsipas is calling his week with Roger Federer and Rafael Nadal in Geneva both enjoyable and entertaining, though he's keeping it mostly to himself.
The 21-year-old Greek is coming off his first appearance at Laver Cup, and spoke to press about it at this week's ATP event at Zhuhai.
"I learned a lot about their personalities and who they are and quite interesting conversations with them, which I wouldn't share in public," he said, smiling and adding, "Whatever happens in Geneva stays in Geneva.''
Tsitsipas received sideline coaching from the pair in singles and played doubles with both Federer and Nadal. He said he also enjoyed the team atmosphere off the court in a group that included another veteran, Fabio Fognini, and fellow younger players like Dominic Theim and Alexander Zverev.
"Nice guys all of them, very nice," he said. "An opportunity for me to learn from them, going for dinner, spending as much time as we can with each other, exchanging tactics, opinions."
Tsitsipas is the top seed at Zhuhai.