Gael Monfils of France serves during the singles quarterfinal match between Gael Monfils of France and Ricardas Berankis of Lithuania at the ATP Dubai Duty Free Tennis Championships 2019 in Dubai, the United Arab Emirates, Feb. 28, 2019. Gael Monfils of France won 2-1 to proceed to the semifinals. (Xinhua/Mahmoud Khaled)