Which athlete-brand partnership was the first to include an unprecedented 'signature shoe line' with royalties rather than just a flat endorsement fee?

Test your knowledge about groundbreaking sports product endorsement deals that changed the industry! Athletic endorsements have evolved dramatically over the decades, with some partnerships completely transforming both the athlete's career and the brand's market position. This trivia question focuses on a revolutionary endorsement deal that altered how sports marketing contracts are structured today.

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Michael Jordan and Nike (Air Jordan, 1984)
Pelé and Puma (King Pelé, 1970)
Stan Smith and Adidas (Stan Smith, 1973)
Kareem Abdul-Jabbar and Adidas (Superstar, 1976)