Which famous athlete turned down a potentially lucrative equity-based endorsement deal with Starbucks in the 1990s, later admitting it was one of his biggest business mistakes?

Product endorsements by celebrities can make or break a brand's marketing strategy. Some endorsement deals have become legendary in the business world, both for their success and their failures. This trivia question explores one of the most famous product endorsement decisions that a celebrity later regretted - a cautionary tale about missing out on potentially massive earnings by underestimating a product's future success.

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Shaquille O'Neal
Michael Jordan
Magic Johnson
LeBron James