Rafael Nadal, Sam Querrey and other stars hung out with SpongeBob Squarepants and Patrick Star in Acapulco for the Mexican Open's Kids' Day.

The event included a champions' exhibition, consisting of Nadal, Carlos Moya, David Ferrer and Querrey. Last year, Querrey played a near-perfect match to beat Nadal in the final.

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Of course, this all went down before Nadal was forced to withdraw from the event with a hip injury.

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The local children got to partake in the the festivities, too.

They even played a fun racket-target game with Kevin Anderson.

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There was also a mixed doubles match featuring Juan Martin Del Potro, Kristina Mladenovic, Kei Nishikori and Alize Cornet.

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Other participants in the star-studded Kids' Day included Sloane Stephens, the Bryan brothers, Andrey Rublev and Tatjana Maria.

Nadal, Querrey and
many more light up
Acapulco Kids' Day

Nadal, Querrey and many more light up Acapulco Kids' Day

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The 14th annual Desert Smash charity tennis event is Tuesday, March 6, and there are a lot of reasons to mark your calendar. Here are just five of those reasons, including the event's host, Serena Williams.

WATCH DESERT SMASH LIVE on TENNIS CHANNEL and TENNIS.com