The King of Clay mixed it up with the 2020 women's singles champ, who is a big fan.
World No. 1 seeks fresh start in Paris.
The Frenchman spent time practicing with Federer and was impressed by what he saw.
Both had high praise for the King of Clay during Roland Garros media day on Friday.
The American has been sabotaged by health issues in recent years, but is on the up.
Stefanos Tsitsipas, after a solid clay court season, says he may have yet another surprise for fans in Paris.
US Open champion shares essential element to a deep Roland Garros run.
