Serena Williams is officially a mom, and the tennis world can once again be nervous about her impending dominance. The tennis star and fiancé Alexis Ohanian just welcomed their first child together, a baby girl.

Serena had been admitted to a Palm Beach, FL medical center on Friday, where she gave birth to a 6-pound, 13-ounce girl, per TMZ Sports.

Serena and Ohanian, the Reddit co-founder, got engaged last December.

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