MELBOURNE, Jan. 24 -- China's Wang Qiang toppled tennis legend Serena Williams at the Australian Open on Friday, while defending champion, Naomi Osaka bowed out to 15-year-old Coco Gauff in the third round.

In a day of upsets for the champions, Williams lost to Wang, 6-4, 6-7 (2), 7-5, and Osaka crumbled to youngster Gauff, 6-3, 6-4.

Meanwhile former world No. 1 Caroline Wozniacki ended her tournament, and her career, after losing to Tunisian, Ons Jabeur, 7-5, 3-6, 7-5.

The Danish Grand Slam winner always planned to retire after this year's event and said that the reception from fans and her family after the match provided a fitting end.

"It was a packed stadium, people were clapping, I had the Danish flag at my back and I had my family there," Wozniacki said.

"I don't think I could have scripted it any better. I think it was the perfect moment."

At the same time Wozniacki was ending her illustrious career, long time friend and competitor, Williams was suffering the tournament's biggest upset so far at the hands of China's No. 1 player, Wang.

The last time the pair met was at the 2019 U.S. Open quarterfinals, when Williams demolished the Chinese contender 6-1, 6-0.

Despite being ruled out by most observers, Wang showed early on that she meant business, moving Williams around the court and withstanding the champion's devastating returns.

Wang said that time in the gym along with belief in herself, and from her team, helped her play a vastly different match this time around.

【体坛英语资讯：Roundup: Wang stuns Williams, Osaka out on day 5 of Australian Open】相关文章：

★ 娱乐英语资讯：Publicist says Nicole Kidman is pregnant

★ 体坛英语资讯：Liu, Murofushi spearhead Asian hopes

★ 体坛英语资讯：Liu Xiang cautious on Osaka prospect

★ 娱乐英语资讯：Wedding bells not far off for Pamela Anderson

★ 体坛英语资讯：Hosts China struggle into quarter-finals

★ 体坛英语资讯：Federer and Henin win top sports awards

★ 娱乐英语资讯：Cruise shuns swelling bank account

★ 体坛英语资讯：Inter maintain lead with 2-0 win at Fiorentina

★ 娱乐英语资讯：Cage confronts naked intruder in home

★ 体坛英语资讯：Tyson Gay: The fastest sprinter in Osaka