Emma Raducanu's preparations for next month's Australian Open have been derailed after she tested positive for Covid-19.
The 19-year-old US Open champion, who is experiencing mild symptoms and has begun her 10 days of self-isolation, will now miss the Mubadala World Tennis Championship in Abu Dhabi, which begins on Thursday.
Raducanu, who is a big fan of Formula One, had also been expected to attend Sunday's season-deciding Grand Prix in Abu Dhabi but was absent from the event.
"I was very much looking forward to playing in front of the fans here in Abu Dhabi, but unfortunately after testing positive for Covid-19, I will have to postpone until the next opportunity," she said. "I'm isolating as per rules and hopefully will be able to get back on court soon."
The Australian Open starts on Jan 17, with players required to be vaccinated and have tested negative in the 72 hours before they arrive in Australia rather than be subject to the country's strict hotel-quarantine rules.