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

12:28 p.m.

Naomi Osaka has reached her first semifinal at the Australian Open with a 6-4, 6-1 victory over Elina Svitolina.

Osaka used her aggressive style and big hitting to compile a 31-11 edge in winners, including eight aces.

The No. 4-seeded Osaka is the reigning U.S. Open champion. She never had been past the fourth round at Melbourne Park.

Svitolina had her neck and shoulders massaged by a trainer during a medical timeout while trailing 3-0 in the second set.

Osaka’s semifinal opponent will be 23-time major champion Serena Williams or No. 7 seed Karolina Pliskova.

Osaka beat Williams for the championship at Flushing Meadows last year in a match filled with all sorts of drama involving the American star and the chair umpire.

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10:30 a.m.

Serena Williams and Naomi Osaka can set up a rematch of their chaotic U.S. Open final by winning quarterfinal matches at the Australian Open.

The No. 4-seeded Osaka faces No. 6 Elina Svitolina in the first quarterfinal in Rod Laver Arena on Wednesday.

That will be followed by Williams’ matchup against No. 7 Karolina Pliskova.

Osaka beat Williams for the championship in New York last September in a match filled with all sorts of drama involving the American star and the chair umpire.

In Wednesday’s men’s quarterfinals at Melbourne Park, 2016 Wimbledon runner-up Milos Raonic faces No. 28 Lucas Pouille during the day, while 14-time major champion Novak Djokovic takes on 2014 U.S. Open finalist Kei Nishikori at night.

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Ukraine's Elina Svitolina receives treatment from a trainer during her quarterfinal against Japan's Naomi Osaka at the Australian Open tennis championships in Melbourne, Australia, Wednesday, Jan. (AP Photo/Mark Schiefelbein)
Ukraine’s Elina Svitolina receives treatment from a trainer during her quarterfinal against Japan’s Naomi Osaka at the Australian Open tennis championships in Melbourne, Australia, Wednesday, Jan. (AP Photo/Mark Schiefelbein)
United States' Serena Williams signs autographs after defeating Romania's Simona Halep in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. (AP Photo/Mark Schiefelbein)
United States’ Serena Williams signs autographs after defeating Romania’s Simona Halep in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. (AP Photo/Mark Schiefelbein)
Japan's Naomi Osaka celebrates after defeating Latvia's Anastasija Sevastova during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. (AP Photo/Kin Cheung)
Japan’s Naomi Osaka celebrates after defeating Latvia’s Anastasija Sevastova during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. (AP Photo/Kin Cheung)