MELBOURNE, Australia | Australian Open champ Osaka is Asia’s 1st No. 1 in tennis

MELBOURNE, Australia | Australian Open champ Osaka is Asia’s 1st No. 1 in tennis

MELBOURNE, Australia —Jan 28, 2019— Australian Open champion Naomi Osaka is the youngest woman to make her debut at No. 1 in nine years and the first man or woman from Asia to lead the tennis rankings.

Simona Halep’s 48-week stay atop the WTA ended Monday. She slid to No. 3 after a fourth-round loss to Serena Williams.

Williams missed the tournament last year after having a baby; her run to the quarterfinals this time pushed her up five places to No.

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