Serena and Venus Williams were knocked out Of US Open Doubles

Serena Williams' amazing tennis doubles career has likely come to an end

Serena and her sister, Venus Williams lost in straight sets to the Czech duo of Lucie Hradecká and Linda Nosková,

in the 1st round of the US Open doubles event in New York.

Serena Williams is still set to play against Australian tennis player Ajla Tomljanović in the 3rd round of the US Open.

Venus lost in the 1st round of US Open singles on Tuesday.

Thursday night might have been the final doubles match for Serena Williams and Venus Williams as a doubles duo.

The Czech Republic duo of Hradecká, 37, and Nosková, 17, reach the 2nd round, winning 7-6(5), 6-4.

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