No. 1 seed Jannik Sinner suffered an elbow injury when he slipped and fell during his fourth-round match against Grigor Dimitrov, who eventually retired after suffering a pec injury. He bounced back and looked no worse for wear as he dominated 10th-seeded American phenom Ben Shelton 7-6 (2),

Follow our analysis and reactions from day eight at Wimbledon as Jannik Sinner and Novak Djokovic moved into the quarterfinals

Dimitrov was playing fantastic tennis, running Sinner around the court and delivering booming serves. Dimitrov won the first set 6-3 and survived a hard-charging comeback attempt from the Italian in the second to take the set 7-5 and put the world No. 1 in a desperate position.