Serena Williams gave birth to a baby girl on Friday, sister Venus Williams confirmed to ESPN at the US Open.
The four-time Olympic gold medalist and her fiancé, Reddit co-founder Alexis Ohanian, have yet to reveal the name.
Williams, 35, has said that she hopes to return from pregnancy to defend her Australian Open title in January. She is one victory away from tying Margaret Court‘s record of 24 Grand Slam singles titles.
She has not committed to pursuing the 2020 Tokyo Olympics, when she will be 38 and older than any previous Olympic singles player.
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