Updated

Naomi Osaka has beaten Serena Williams in the Australian Open semifinals, halting Williams’ effort for a record-tying 24th Grand Slam singles title.

Osaka has extended the winning streak to 20 matches, besting Williams in a five-game run after Williams won the first two games.

Japan's Naomi Osaka, left, is congratulated by United States' Serena Williams after winning their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Feb. 18, 2021.(AP Photo/Andy Brownbill)

Japan's Naomi Osaka, left, is congratulated by United States' Serena Williams after winning their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Feb. 18, 2021.(AP Photo/Andy Brownbill)

SERENA STOPS HALEP AT AUSTRALIAN OPEN, SETS UP OSAKA SHOWDOWN 

Williams' finished with 24 unforced errors and just 12 winners, allowing Osaka, of Japan, to reach her fourth major final after beating her American rival: 6-3, 6-4.

Williams won her 23rd major championship at Melbourne Park in 2017 but remained one behind Margaret Court's mark for the most in history.

She was emotional at a news conference and blamed errors for her loss. When asked if her after-match moments at the stadium were a kind of good-bye, she demured.

"If I ever say farewell, I wouldn't tell anyone," Williams said.

But then she cut her press conference short, saying "I'm done."

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On Saturday, at 7:30 p.m. local time (3:30 a.m. EST), Osaka will meet a first-time Grand Slam finalist for the championship. No. 22 Jennifer Brady of the United States was scheduled to face No. 25 Karolina Muchova in Thursday’s second semifinal.

The Associated Press contributed to this report.