World Cup matches in the US are being played under local lightning safety rules that can halt play as soon as lightning is detected close to a stadium.. Under those protocols, play is suspended ‌immediately if lightning is detected within an eight-mile radius of a stadium and can only resume after 30 minutes have passed without a further ⁠strike. Any new strike resets the countdown.

Lightning can strike several miles from the storm that produces it, and safety agencies warn that if thunder can be heard, lightning is close enough to pose a danger.

The National Oceanic and Atmospheric Administration says there is no safe place outside during a thunderstorm and advises people to move to a substantial building. However, the danger is also not limited to a bolt hitting a person directly.

Serena Williams returned to competitive singles action amid huge fanfare after a four-year absence but the American icon could not overcome the first hurdle at Wimbledon. 

The 44-year-old wildcard was denied the chance to become the oldest woman to claim a singles match victory at the All England Club since Martina Navratilova in 2004, ‌but she said she was delighted with the reception she got from adoring fans.