Which athlete signed what was widely considered the first billion-dollar lifetime endorsement deal with a sportswear company?

Athletic endorsements have transformed sports marketing and created billion-dollar personal brands. From Michael Jordan's iconic Nike partnership to Cristiano Ronaldo's lifetime deal, these collaborations have changed how athletes monetize their fame and how brands connect with consumers. This trivia question tests your knowledge about one of the most significant endorsement milestones in sports business history. Think you know which partnership broke the endorsement ceiling?

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LeBron James with Nike (2015)
Michael Jordan with Nike (1997)
Cristiano Ronaldo with Nike (2016)
Stephen Curry with Under Armour (2013)