Serena Williams's husband celebrates her return to tennis with 4 amazing billboards

Serena Williams is considered the GOAT (greatest of all time) on the tennis court. But as she makes her return to competitive tennis just five months after giving birth to her first child, husband Alexis Ohanian Sr. is giving her another impressive title: the “greatest momma of all time” — and there are some epic billboards to prove it.

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