Which famous athlete famously switched from endorsing Adidas to becoming the face of Puma, despite the historic rivalry between the two German sportswear companies founded by brothers?

Throughout history, some celebrities have been so closely associated with certain brands that they become almost inseparable in public consciousness. But did you know that many famous faces have switched allegiances over time, sometimes endorsing direct competitors? This trivia question explores one such surprising brand flip that shocked the advertising world and created quite a stir in the marketing industry.

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Usain Bolt
Michael Jordan
Serena Williams
Cristiano Ronaldo