Canadian Denis Shapovalov is the first international tennis player to test positive for COVID-19 after arriving in Australia.
This comes after Spanish star Rafael Nadal announced last week that he tested positive for the virus after a competition in Abu Dhabi.
Shapovalov is ranked 14th in the world and was set to play in the ATP Cup in Sydney.
He is now unlikely to take part in the competition, as tennis officials and organisers across the country aim to ensure the Summer of Tennis and Australian Open are still able to go ahead in January.
The Canadian - along with Borna Coric - was one of the first players to arrive in Australia ahead of the upcoming tournaments.
Players are required to provide negative tests before flying to Australia, along with a negative test upon arrival.
More competitors are set to land in the country in the next few days, with the majority flown in on tournament-organised charter flights.
Shapovalov announced on social media on Sunday he had tested positive for COVID-19 following a competition in Abu Dhabi.
“Hi everyone, just wanted to update you that upon my arrival in Sydney, I tested positive for Covid,” Shapovalov wrote.
“I am following all protocols, including isolation and letting the people who I’ve been in contact with know.
“Right now I am experiencing minor symptoms and look forward to getting back on the court, when it is safe to do so.
“Thank you in advance for your support and wish you all a safe and happy holiday.”
The 22-year-old will now enter a 10-day isolation period, and will all but certainly miss Canada's first match against the United States next Sunday.
Tennis Australia CEO Craig Tiley spoke on Wednesday regarding COVID-19 measures and accepted that there will be a number of positive cases.
He also confirmed that all players will have to be fully vaccinated or be granted a medical exemption.
“We are dealing with a variant that is challenging because it‘s highly infectious,” Tiley said.
“Our challenge this year is going to be positive cases.
“We have modelled the potential of positive cases – there will be positive cases – and it’s just how we manage them and manage the location and the necessary isolation associated with it.
“Players that are testing positive now … will complete a period of time when they’re no longer infectious when they’re shedding the virus, then they will be fine.
“So, getting positive now is probably - if you’re going to get positive - a good thing."
The Australian Open will be played between January 17-30 at Melbourne Park in Victoria, Australia.
