Halep sent home but Djokovic, Williams headed to the Australian Open quarter-finals

Pablo Carreno Busta of Spain reacts during the men's singles fourth round match between Kei Nishikori of Japan and Pablo Carreno Busta of Spain at 2019 Australian Open in Melbourne, Australia, on Jan. 21, 2019. Pablo Carreno Busta lost 2-3. (Xinhua/Hu Jingchen)