(210609) — PARIS, June 9, 2021 (Xinhua) — Stefanos Tsitsipas of Greece returns the ball during the men’s singles quarterfinal match between Stefanos Tsitsipas of Greece and Daniil Medvedev of Russia at the French Open tennis tournament at Roland Garros in Paris, France, June 8, 2021. (Photo by Aurelien Morissard/Xinhua)