David Beckham — Inter Miami & Brand Beckham

David Beckham’s Inter Miami CF leveraged a $25 million franchise clause from his 2007 MLS contract to build a club now valued at $600 million after signing Lionel Messi in 2023. Merchandise sales exceeded every other MLS team combined, and his total business empire—including Diageo whisky, Tudor watches, and brand fees—generates more annually than his $500 million football career earnings. His net worth growth of 140% since the Messi deal surpasses the average celebrity side hustle’s 50% appreciation rate, marking him as the most profitable athlete-entrepreneur in the list.