US tennis great Serena Williams’s entrepreneur husband, Alexis Ohanian recently took to social media to pen a sweet message on her 40th birthday (September 26).

Williams and Ohanian, 38, who tied the knot in 2017, have a daughter Olympia, four. “The incomparable @serenawilliams—grateful for every minute I get with my amazing wife & Olympia’s mama,” he Instagrammed, alongside a picture of them.