Naomi Osaka announces birth of baby girl

Former World No. 1 and four-time Grand Slam champion Naomi Osaka celebrated a new title this week: mom.

Osaka gave birth to her daughter, Shai, in Los Angeles, People magazine reported.

Osaka, 25, confirmed the news Thursday on social media, complete with a photo of her daughter wearing an outfit featuring tennis rackets and tennis balls.

"Well that was a cool little intermission, now back to your regularly scheduled program," Osaka wrote on Twitter.

Osaka and her boyfriend Cordae, 25, announced in January that she was expecting her first child.

Osaka, who was ranked No. 1 in January 2019, has four Grand Slam titles -- two Australian Opens (2019, 2021) and two U.S. Opens (2018, 2020) -- among her seven career victories.

Osaka played in just 11 tournaments in 2022. She took much of 2021 off for mental health reasons.