Which athlete holds the Guinness World Record for the most valuable lifetime endorsement deal with a single brand?

Product endorsements have become a billion-dollar industry, with world-record deals that transform both brands and celebrity careers. From sports to entertainment, these partnerships have set astonishing financial benchmarks that continue to be broken. Test your knowledge about the most lucrative and groundbreaking product endorsement deals that have made history in the business world.

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LeBron James with Nike (estimated $1 billion)
Cristiano Ronaldo with Adidas (estimated $850 million)
Tiger Woods with Callaway Golf (estimated $750 million)
Serena Williams with Puma (estimated $600 million)