While he launched his Wimbledon campaign with a straight-sets win over countryman Jay Clarke, his schedule will get no easier in the second round as he meets the 24-time Grand Slam champion Djokovic, who is in the hunt for his eighth Challenge Cup.

Novak Djokovic has been visited twice by a doctor for a stomach issue and given what he called “miracle pills” during a 6-1, 6-7 (7), 6-2, 6-2 victory over Alexandre Muller in Wimbledon’s first round.