Which famous athlete's endorsement deal is credited with transforming Nike from a running shoe company into a global sportswear giant, with the signature shoe line generating over $5 billion in annual revenue?

The world of celebrity endorsements has transformed modern advertising, creating iconic brand partnerships worth hundreds of millions of dollars. Some endorsement deals have become legendary, changing the trajectory of both the celebrity's career and the brand's market position. Test your knowledge about one of the most influential celebrity endorsement deals in retail history that revolutionized an entire product category.

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Michael Jordan (Air Jordan)
Serena Williams (Court Legacy)
LeBron James (LeBron signature line)
Cristiano Ronaldo (CR7 collection)