Ash Barty of Australia waves after defeating Danielle Collins of the U.S. in the women's singles final at the Australian Open tennis championships in Melbourne, Australia on Jan. 29, 2022. Andy Brownbill/AP hide caption
Australian Open
Ash Barty of Australia celebrates after defeating Danielle Collins of the U.S., in the women's singles final at the Australian Open on Saturday in Melbourne. Mark Baker/AP hide caption
Ash Barty of Australia celebrates winning her Women's Singles Semifinals match against Madison Keys of United States during day 11 of the 2022 Australian Open at Melbourne Park on Thursday in Melbourne. Clive Brunskill/Getty Images hide caption
Novak Djokovic prepares to take his seat on a plane to Belgrade, in Dubai, United Arab Emirates, Monday, Jan. 17, 2022. Darko Bandic/AP hide caption
Novak Djokovic sits in the back of car arriving at an immigration detention hotel in Melbourne, Australia Saturday, Jan. 15, 2022. AP hide caption
In this image taken from aerial video footage, tennis star Novak Djokovic practices on the tennis court on Tuesday in Melbourne, Australia. Australian Broadcasting Corporation/Channel 9 via AP hide caption
Novak Djokovic stands with Australian Open tournament director Craig Tiley during the trophy presentation at the Australian Open tennis championships in Melbourne, Australia, last February. Andrew Brownbill/AP hide caption
Protesters and fans of Novak Djokovic gather outside the Park Hotel, used as an immigration detention hotel where Djokovic is confined in Melbourne, Australia, on Saturday. Hamish Blair/AP hide caption
The stands at the Australian Open will be looking quite empty for the next five days after officials in the state of Victoria called for a five-day lockdown of the region. Spectators won't be allowed at Melbourne Park during that time. Paul Crock/AFP via Getty Images hide caption
People associated with the Australian Open are seen lining up at a testing facility at the View Hotel on Thursday in Melbourne, Australia. Victoria state has reintroduced COVID-19 restrictions after a hotel quarantine worker tested positive for the coronavirus on Wednesday. Asanka Ratnayake/Getty Images hide caption
Smoke from bushfires shrouds the Melbourne city skyline. Hazardous breathing conditions prompted Australian Open officials to suspend practice sessions on Tuesday. Daniel Pockett/Getty Images hide caption
Serena Williams serves against Evgeniya Rodina of Russia during their Ladies' Singles fourth round match on day seven of Wimbledon on July 9, 2018 in London. Clive Mason/Getty Images hide caption
Serena Williams holds the winner's trophy following her victory in the women's singles final in the Australian Open in Melbourne Saturday. Paul Crock/AFP/Getty Images hide caption
Tennis star Maria Sharapova speaks about her failed drug test at the Australian Open during a news conference in Los Angeles in March 2016. Damian Dovarganes/AP hide caption
Maria Sharapova talks to the media in Los Angeles on Monday regarding a failed drug test. Kevork Djansezian/Getty Images hide caption
Serbia's Novak Djokovic has won the Australian Open six times — in 2008, 2011, 2012, 2013 and 2015, and then on Sunday. William West/AFP/Getty Images hide caption
The BBC and BuzzFeed published an investigative report alleging widespread match-fixing and corruption in the sport of tennis. The report was released just before the start of the Australian Open. Rafiq Maqbool/AP hide caption
Stanislas Wawrinka of Switzerland kisses the Australian Open trophy during the awarding ceremony after winning the men's singles final against Spain's Rafael Nadal on Sunday in Melbourne, Australia. Xu Yanyan/Xinhua/Landov hide caption
Li Na of China celebrates after defeating Dominika Cibulkova of Slovakia during their women's singles final at the Australian Open tennis championship in Melbourne, Australia, on Saturday. Rick Rycroft/AP hide caption
Rafael Nadal of Spain celebrates after defeating Roger Federer of Switzerland during their semifinal Friday at the Australian Open tennis championship in Melbourne. Aaron Favila/AP hide caption
Justine Henin plays the last match of her professional career in the third round of the Australian Open against Svetlana Kuznetsova of Russia. Cameron Spencer/Getty Images hide caption