The Latest on the Australian Open (all times local):

12:40 p.m.

Defending champion Naomi Osaka overcame swirling winds on Margaret Court Arena to beat Zheng Saisai 6-2, 6-4 and advance to the third round.

Japan's Naomi Osaka waits to serve to China's Zheng Saisai during their second round singles match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2020. (AP PhotoAndy Brownbill)

Japan's Naomi Osaka waits to serve to China's Zheng Saisai during their second round singles match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2020. (AP PhotoAndy Brownbill)

Osaka became upset with herself at times. After having her service broken in the second set Osaka threw her racket to the ground, tossed a ball from her hand and kicked the racket along the court. She then sat in her court-side chair with a towel over her head. But she rallied back and clinched the match when Zheng double-faulted on match point.

Third-seeded Osaka said the best part about winning over Zheng was how she was able to deal with all the emotions.

“I hope you guys like the tennis that’s coming after my match,” third-seeded Osaka said, “because it wasn’t that pretty.”

China's Zheng Saisai makes a backhand return to Japan's Naomi Osaka during their second round singles match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2020. (AP PhotoAndy Brownbill)

China's Zheng Saisai makes a backhand return to Japan's Naomi Osaka during their second round singles match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2020. (AP PhotoAndy Brownbill)

Because of suspended matches from rain on Monday, eight first-round women's singles matches were not completed Tuesday. That meant Osaka had advanced to the third round before some of those players had finished their first.

In other second-round matches, No. 14 Sofia Kenin beat qualifier Ann Li 6-1, 6-3. Anett Kontaveit beat wild-card entry Astra Sharma 6-0, 6-2 in a first-round match.

11:10 a.m.

Play is underway on Day 3 at the Australian Open with defending champion Naomi Osaka playing Zheng Saisai in the opening match at Margaret Court Arena.

Later at Rod Laver Arena it'll be a cavalcade of Grand Slam singles winners. Two-time Wimbledon champion Petra Kvitova is playing the first match there against Paula Badosa, followed by French Open champion and local hope Ash Barty's second-round match against Polona Hercog.

Closing out the action at Rod Laver will be players with a total of 59 Grand Slam singles championships: Novak Djokovic with 16 concluding the day program and Serena Williams (23) and Roger Federer (20) playing at night.

Temperatures were expected to reach 32 degrees Celsius (90 Fahrenheit) during the day with the possibility of evening showers.

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