Stefanos Tsitsipas of Greece (R) shakes hands with Gael Monfils of France after the singles semifinal match between Stefanos Tsitsipas of Greece and Gael Monfils of France at the ATP Dubai Duty Free Tennis Championships 2019 in Dubai, the United Arab Emirates, March 1, 2019. Stefanos Tsitsipas won 2-1. (Xinhua/Mahmoud Khaled)