China's Wang ousts French Open champion Barty at US Open
China's 18th-seeded Wang Qiang advanced to the US Open quarter-finals on Sunday with a 6-2, 6-4 upset of Australian second seed Ashleigh Barty, the reigning French Open champion.
Wang will face the winner of a later fourth-round match between Croatian 22nd seed Petra Martic and US eighth seed Serena Williams, who is seeking a 24th career Grand Slam title to match Margaret Court's all-time record.