Conor McGregor — The $600M Whiskey Fighter

McGregor earned $100 million from the Mayweather fight — more than every other UFC fighter's purse that year combined. That blew open the conversation about UFC fighter pay. Then he sold his majority stake in Proper No. Twelve whiskey to Proximo Spirits for $600 million in 2021. One bottle of Irish whiskey made him 6x what the biggest fight in UFC history paid. Forbes ranked him the highest-paid athlete on Earth in 2021 at $180 million. He fights maybe once every two years now. The whiskey works 24/7.