Greece's Stefanos Tsitsipas, smiles after defeating France's Gilles Simon after their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021. (AP Photo/Andy Brownbill)

FILE - In the Sept. 29, 2020 file photo, Egypt's Mayar Sherif plays a shot against Karolina Pliskova of the Czech Republic in the first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France. Sherif has made history for Egyptian tennis, beating fellow qualifier Chloe Paquet 7-5, 7-5 in the first round of the Australian Open on Tuesday Feb. 9, 2021 to become the first woman from her country to win a Grand Slam match. (AP Photo/Michel Euler,File)

Australia's Ashleigh Barty makes a forehand return to Montenegrin's Danke Kovinic during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021. (AP Photo/Rick Rycroft)

Spain's Rafael Nadal serves to Serbia's Laslo Djere during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Rick Rycroft)

United States' Coco Gauff serves to Switzerland's Jil Teichmann during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Hamish Blair)

United States' Jessica Pegula makes a backhand return to Victoria Azarenka of Belarus during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Rick Rycroft)

Victoria Azarenka of Belarus reacts during her match against United States' Jessica Pegula in their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Rick Rycroft)

United States' Sofia Kenin makes a forehand return to Australia's Maddison Inglis during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Rick Rycroft)

Spain's Garbine Muguruza waves after defeating Russia's Margarita Gasparyan in their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Rick Rycroft)

Spain's Carlos Alcaraz celebrates a point win over Botic Van de Zandschulp of the Netherlands during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Feb. 9, 2021.(AP Photo/Hamish Blair)