Aryna Sabalenka of Belarus plays a forehand return to Jessica Bouzas Maneiro of Spain during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Aryna Sabalenka, left, of Belarus is congratulated by Jessica Bouzas Maneiro of Spain following their second round match at the Australian Open tennis championship in Melbourne, Australia.

Carlos Alcaraz of Spain plays a forehand return to Yoshihito Nishioka of Japan during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Carlos Alcaraz of Spain serves to Yoshihito Nishioka of Japan during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Jessica Bouzas Maneiro of Spain plays a backhand return to Aryna Sabalenka of Belarus during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Jessica Bouzas Maneiro of Spain plays a forehand return to Aryna Sabalenka of Belarus during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Zheng Qinwen of China plays a forehand return to Laura Siegemund of Germany during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Laura Siegemund of Germany plays a backhand return to Zheng Qinwen of China during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Zheng Qinwen of China plays a backhand return to Laura Siegemund of Germany during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Laura Siegemund of Germany plays a forehand return to Zheng Qinwen of China during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Novak Djokovic of Serbia celebrates after defeating Jaime Faria of Portugal in their second round match at the Australian Open tennis championship in Melbourne, Australia.

Diana Shnaider of Russia reacts after defeating Ajla Tomljanovic of Australia in their second round match at the Australian Open tennis championship in Melbourne, Australia.

Jessica Pegula of the U.S. celebrates after defeating Elise Mertens of Belgium in their second round match at the Australian Open tennis championship in Melbourne, Australia.

Naomi Osaka of Japan reacts after winning a point against Karolina Muchova of the Czech Republic during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Carlos Alcaraz of Spain waves after defeating Yoshihito Nishioka of Japan in their second round match at the Australian Open tennis championship in Melbourne, Australia.

Tomas Machac of the Czech Republic celebrates after defeating Reilly Opelka of the U.S. in their second round match at the Australian Open tennis championship in Melbourne, Australia.

Novak Djokovic of Serbia plays a backhand return to Jaime Faria of Portugal during their second round match at the Australian Open tennis championship in Melbourne, Australia.

Leylah Fernandez of Canada celebrates after defeating Cristina Bucsa of Spain in their second round match at the Australian Open tennis championship in Melbourne, Australia.

Casper Ruud of Norway walks onto court for his second round match against Jakub Mensik of the Czech Republic at the Australian Open tennis championship in Melbourne, Australia.

Sebastian Korda of the U.S. plays a backhand return to Aleksandar Vukic of Australia during their second round match at the Australian Open tennis championship in Melbourne, Australia.