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'Can I play?' Watch Serena Williams crash a random tennis matchby Circa News
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WATCH | This week's Tennis Channel update highlights Serena Williams, who not only crashed a random tennis match in San Francisco, but also posted video of the surprise visit on Snapchat. (Full disclosure: Tennis Channel is owned by Circa's parent company, Sinclair Broadcast Group.)

On Instagram, Varun Desai said Williams' surprise visit left him "Absolutely speechless!"

WATCH | Check out more of the sweet highlights, which include:

  • Unorthodox footwear for a tennis match
  • Multiple cameos by her dog, Chip
  • Light trash-talking
  • A good time had by all
  • Bonus footage of Williams enjoying a playground swing

In other casual-tennis news, Roger Federer and Andy Murray had a playful face-off in Dubai.

Federer won, but Murray won our hearts for this around-the-net shot and shoreline celebration.

WATCH | Check out more highlights from Fed and Andy's beach battle.