Peng Shuai has dumped women's fourth seed Agnieszka Radwanska out of the US Open in the second round.
The world number 50 came through in straight sets 6-3 6-4 on Louis Armstrong Stadium to continue Radwanska's poor record at Flushing Meadows.
The Pole has never got past the fourth round in New York, but got off to a good start today.
She broke China's Peng in the opening game and then consolidated the advantage to go 2-0 in front.
That would be her only break of serve, though, and Peng won six of the next seven games to clinch the opener.
A break midway through the second set was enough for Peng and she will now face either Italy's Roberta Vinci or Irina-Camelia Begu in round three.
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