Which athlete's product endorsement deal was the first to include a signature shoe line with royalties on each pair sold, fundamentally changing the athlete endorsement model in sports retail?

In the competitive world of sports retail, athlete endorsements drive billions in revenue annually. These strategic partnerships between sports brands and elite athletes have evolved dramatically since the days of early sneaker deals. Today's endorsement contracts often include complex performance clauses, royalty structures, and brand equity components. How much do you know about the economic impact of these high-profile product endorsements in the sports industry?

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Michael Jordan with Nike (1984)
Pelé with Puma (1970)
Arnold Palmer with Wilson (1962)
Kareem Abdul-Jabbar with Adidas (1976)