Which athlete signed what was considered a groundbreaking lifetime endorsement deal with Nike in 2015, estimated to be worth over $1 billion?

Athletic endorsements have become a cornerstone of sports marketing, with companies investing millions to associate their products with star athletes. These partnerships have transformed both the business of sports and consumer product marketing. Test your knowledge about one of the most significant endorsement deals in sports history that changed the landscape of athlete-brand partnerships forever.

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LeBron James
Cristiano Ronaldo
Serena Williams
Michael Phelps