Rafael Nadal hosts a Virtual Tennis Tournament in New York City (10 images)

Serena and Venus Williams participate in a Virtual Tennis Tournament hosted by Rafael Nadal at Lotte New York Palace on August 25, 2016 in New York City. The US Open Tennis Championships begin on Monday, August 29.

Tennis players Serena Williams and Venus Williams participate in a Virtual Tennis Tournament at Lotte New York Palace on August 25, 2016 in New York City. The US Open Tennis Championships begin on Monday. Photo by John Angelillo/UPI

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Tennis players Serena Williams, Rafael Nadal and Venus Williams participate in a Virtual Tennis Tournament at Lotte New York Palace on August 25, 2016 in New York City. The US Open Tennis Championships begin on Monday. Photo by John Angelillo/UPI

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Serena Williams and Venus Williams arrive for photos before they participate in a Virtual Tennis Tournament hosted by Rafael Nadal at Lotte New York Palace on August 25, 2016 in New York City. The US Open Tennis Championships begin on Monday. Photo by John Angelillo/UPI

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Tennis player Rafael Nadal participate in a Virtual Tennis Tournament at Lotte New York Palace on August 25, 2016 in New York City. The US Open Tennis Championships begin on Monday. Photo by John Angelillo/UPI

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