Which athlete's endorsement deal included an unprecedented 'percentage of revenue' model rather than a flat fee, eventually creating a billion-dollar sub-brand?

Athletic endorsement deals have transformed the sports industry, creating billion-dollar partnerships between athletes and brands. These collaborations have produced iconic campaigns and signature products that transcend sport itself. Some endorsement deals have been so influential they've rescued struggling brands or created entirely new product categories. Test your knowledge about one of the most significant athletic endorsements in sports marketing history!

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Michael Jordan with Nike (Air Jordan)
Tiger Woods with Titleist
Serena Williams with Puma
LeBron James with Reebok