Which celebrity endorsement deal is credited with transforming athletic footwear marketing and creating the first billion-dollar athlete-endorsed product line?

Throughout history, famous people have significantly influenced product marketing through endorsements. This trivia question explores a landmark celebrity endorsement that revolutionized how brands leverage famous personalities for product promotion, creating one of the most successful partnerships between an athlete and a brand in retail history.

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Michael Jordan's partnership with Nike for Air Jordan (1984)
Tiger Woods' endorsement deal with Nike Golf (1996)
David Beckham's lifetime deal with Adidas (2003)
LeBron James' initial contract with Reebok (2003)