Anna Kournikova — Famous Without Winning

Kournikova never won a singles title on the WTA Tour — not one. Yet she was the most searched athlete on the internet from 2000 to 2003 and earned more from endorsements ($50 million at peak) than most Grand Slam champions. Her Adidas, Lycos, and Sports Illustrated deals were based entirely on looks and charisma. She proved — controversially — that in women's sports, marketability and achievement are separate currencies. Critics called her a "sportswoman who doesn't win." The endorsement checks never cared. Kournikova is either a cautionary tale or a blueprint, depending on who you ask.