The 10 Most Watched Ads on YouTube in May

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It's rare to excel professionally at both basketball and soccer, but Samsung Mobile managed it back in May—unleashing two spots that were among the top three branded videos on YouTube that month.

Sandwiched in between them, at No. 2, was an Adidas spot from TBWA starring Lionel Messi—one of many viral hits ahead of the World Cup kickoff in June.

Samsung Home Appliances also made the top 10 in May with an out-of-home stunt in South Africa.

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