Federer, Tsitsipas advance to semifinals at ATP Dubai Duty Free Tennis Championships

Roger Federer of Switzerland serves during the singles quarterfinal match between Roger Federer of Switzerland and Marton Fucsovics of Hungary at the ATP Dubai Duty Free Tennis Championships 2019 in Dubai, the United Arab Emirates, Feb. 28, 2019. Roger Federer won 2-0 to proceed to the semifinals. (Xinhua/Mahmoud Khaled)