Serena And Venus Williams Knocked out in 1st round of US Open doubles.

Between points, Serena and Venus Williams chatted while trading fist bumps or palm slaps.

 At changeovers, they discussed in their seats while grinning.

The siblings hugged one another and left the court to a standing ovation after

their first doubles match in four and a half years at the U.S. Open on Thursday night.

The Lucie Hradecka and Linda Noskova of the Czech Republic defeated the Williams sisters at Flushing Meadows 7-6 (5), 6-4.

"When I heard that I would be facing these two, I was completely speechless. They're legends, after all.

And I've always been a huge fan, especially of Serena. She has probably always been my inspiration, stated Noskova,

a 17-year-old doubles player making her Grand Slam debut. 

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