Roger Federer and Johanna Konta join Serena Williams, Rafael Nadal, Simona Halep, and Dominic Thiem on the list of tennis players who won't be attending the Tokyo 2020 Olympics.

Johanna Konta previously had to withdraw from Wimbledon after one of her family members tested positive for COVID-19.

She had to be in isolation and has since then returned a positive test for coronavirus herself.

"This is a heartbreaking reality for me, as representing Team GB at the Olympic Games in Rio in 2016 is one of my most treasured memories from my career," Konta said on social media, via BBC.com.

"I'll be doing my best to get back to full health and fitness and ready to be competing again soon.

"During this time, I'll also be glued to my TV cheering on my fellow Team GB athletes and hope you will all join me."

After losing in the quarter-finals of Wimbledon to Hubert Hurkacz, Federer said that he wasn't sure if he'd be competing in the Tokyo Games.

Now, he's confirmed that a lingering knee injury will keep him from attending the Olympics this summer.