Defending champion Carlos Alcaraz survived a worrying mid-match slump to reach the Wimbledon quarter-finals on Sunday, while injured American Madison Keys quit her last-16 clash in floods of tears after being one game from victory. 

World No. 3 Alcaraz defeated French 16th seed Ugo Humbert 6-3, 6-4, 1-6, 7-5 to make the last-eight of a Grand Slam for the ninth time in just 14 appearances. However, it was another uncomfortable afternoon for Alcaraz, who had needed five sets to see off Frances Tiafoe in the third round.