Novak Djokovic knew he'd tested positive for COVID-19 when he attended a newspaper interview and photo shoot in Serbia last month, saying Wednesday he made an "error of judgment" and should have immediately gone into isolation.

In a statement posted to his social media accounts, the tennis star also blamed "human error" by his support team for failing to declare that he had traveled in the two-week period before entering Australia.

Former Turkey national soccer team defender Ahmet Calik died Tuesday in a traffic accident near Ankara, his current club said.

The state-run Anadolu Agency said the 27-year-old Calik, who had been playing for Ittifak Holding Konyaspor, was killed after he lost control of his car in slippery conditions. The vehicle overturned and landed in a field.

The last time Barcelona faced Real Madrid, the team was still coping with the departure of Lionel Messi and one of its worst financial crises ever.

Ronald Koeman was still at the helm, and the Catalan club struggled on and off the field.

Inter Milan coach Simone Inzaghi has an impressive record against Juventus in the Italian Super Cup.

Both of his matches in the competition were against Juventus and both finished in success for his team — when he was Lazio coach in 2017 and 2019.

Mohamed Salah was kept in check as Egypt lost 1-0 to Nigeria on a superb goal by Kelechi Iheanacho in their first game at the African Cup of Nations on Tuesday.

Riyad Mahrez also had a tough day as he and his Algeria teammates missed several goal-scoring chances to open their title defense with a surprising 0-0 draw with minnow Sierra Leone, which is playing in its first major tournament in 26 years.

FIFA has opened an internal investigation after three Gabonese football coaches were charged with sexually abusing hundreds of children, the top international football body said Tuesday.

It was the most unlikely Australian residence for the world's number one tennis player, Novak Djokovic: a grim, five-story former hotel with no check-out allowed.

Tennis superstar Novak Djokovic trained at the Australian Open venue Tuesday for his attempt to win a record 21st Grand Slam but his dream hung in the balance as the government pondered cancelling his visa, again.

German modern pentathlete Annika Schlieu will not face charges over mistreating her horse at the Tokyo Olympics, her lawyers said on Tuesday.

The Beijing Winter Olympics are fraught with potential hazards for major sponsors, who are trying to remain quiet about China's human rights record while protecting at least $1 billion they've collectively paid to the IOC.

That could reach $2 billion when new figures are expected this year. Sponsors include big household names like Coca-Cola, Procter & Gamble, Visa, Toyota, Airbnb, and Panasonic.