Highlights of 2019 Australian Open day 9

Stefanos Tsitsipas serves during the men's singles quarterfinal match between Roberto Bautista Agut of Spain and Stefanos Tsitsipas of Greece at at 2019 Australian Open in Melbourne, Australia, on Jan. 22, 2019. Stefanos Tsitsipas won 3-1. (Xinhua/Bai Xuefei)