Novak Djokovic of Serbia poses with his trophy after beating Russia's Daniil Medvedev to win the Australian Open men's singles title in Melbourne, Australia, February 21, 2021. /CFP
Naomi Osaka of Japan lifts her trophy after beating Jennifer Brady of U.S. to win the Australian Open women's singles title in Melbourne, Australian, February 20, 2021. /CFP
Elise Mertens (L) of Belgium and Aryna Sabalenka of Belarus jump to celebrate after winning Australian Open women's doubles title, February 19, 2021. /CFP
Ivan Dodig (R) of Croatia and new dad Filip Polasek of Slovakia hold the trophy after winning their first Grand Slam doubles title at Australian Open, February 21, 2021. /CFP
Novak Djokovic of Serbia looks at a butterfly during his Australian Open match with Aslan Karatsev of Russia, February 18, 2021. /CFP
A butterfly lands on Japan's Naomi Osaka as she plays against Tunisia's Ons Jabeur during their Australian Open women's singles match, February 12, 2021. /CFP
Greece's Stefanos Tsitsipas (L) greets Spain's Rafael Nadal after their Australian Open men's singles quarterfinal match, February 17, 2021. /CFP
Serena Williams of U.S. squats to get ready for the ball during her Australian Open quarterfinal match, February 16, 2021. /CFP
Dylan Alcott of Australia celebrates winning a match point during his quad-wheelchair singles final match with Sam Schroder (not pictured) of the Netherlands at Australian Open, February 17, 2021. /CFP
Former Australian Open champion Simona Halep of Romania covers her face with a tennis racket that has a heart shape on it during her match with Veronika Kudermetova (not pictured) of Russia at Australian Open, February 12, 2021. /CFP
Wang Yafan (L) of China reaches out to hit the ball while her teammate Makoto Ninomiya of Japan readies for action during their Australian Open women's doubles match, February 18, 2021. /CFP
Wang Qiang of China reacts to a match loss at Australian Open, February 8, 2021. /CFP
A spectator in the crowd catches a tennis ball in the Australian Open match between Daniil Medvedev of Russia and Stefanos Tsitsipas of Greece, February 19, 2021. /CFP
The Australian Open tennis tournament was held at Melbourne Park in Melbourne between January 10 and February 22, 2021.
The tournament was played in front of a reduced audience for the opening days, and the Grand Slam event organizers planned to allow up to 30,000 fans.
However, the number of COVID-19 cases in Australia forced the event to continue behind closed doors, as Melbourne was placed in a five-day lockdown starting from February 13.