Wimbledon will introduce video review technology this year that will allow players to challenge judgement calls made by the chair umpire, the Grand Slam's organisers said on Saturday.
Frenchman Adrian Mannarino also quit at two sets apiece against eight-times champion Roger Federer after sliding over on Centre Court and injuring his knee.
Venus Williams said she was 'overjoyed' that Wimbledon organisers gave women the spotlight on the tournament's main showcourts on Wednesday.
The Wimbledon tennis championships were cancelled for the first time since World War Two as the coronavirus pandemic wiped another blue-riband sports event off the calendar on Wednesday.