Which celebrity endorsement deal is widely considered to have revolutionized athlete marketing partnerships and became the template for modern celebrity product endorsements?

Celebrity endorsements have become a cornerstone of modern product marketing, with famous personalities leveraging their influence to boost brand awareness and sales. These partnerships can transform product trajectories overnight, creating iconic associations that last for decades. How well do you know the history and impact of game-changing celebrity endorsements that revolutionized product marketing?

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Michael Jordan's partnership with Nike (Air Jordan), starting in 1984
Tiger Woods' deal with American Express, signed in 1997
Serena Williams' collaboration with Gatorade, beginning in 2009
David Beckham's endorsement with Pepsi, established in 2002