Jannik Sinner an injury doubt to play quarter-final and Novak Djokovic returns - Sinner has had an elbow issue ahead of his Benjamin Shelton tie, while Djokovic goes up against Flavio Cobolli

Jannik Sinner advanced to the Wimbledon quarterfinals despite hurting his right elbow in a fall in the opening game and dropping the first two sets Monday night, when his opponent, Grigor Dimitrov, wound up quitting in the third because of an injured pectoral muscle.