American Alison Riske upsets No. 1 seed Ashleigh Barty at Wimbledon

American Alison Riske upset No. 1-seeded Ashleigh Barty in the round of 16 at Wimbledon on Monday.

The unseeded Riske came from a set down to beat Barty 3-6, 6-2, 6-3. Riske broke for a 5-3 lead in the final set and clinched her win on her first match point when Barty sent a backhand wide.

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Riske will now move on to her first career Grand Slam quarterfinal.

The loss ends a 15-match winning streak for Barty, who was coming off wins at the French Open and the Birmingham Classic. She was ranked No. 1 in the world coming into Wimbledon.

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For Riske, it was her 30th Grand Slam tournament, but she’s only gone as far as the fourth round at the 2013 U.S. Open. The 29-year-old will face the winner of a match between Serena Williams and Carla Suarez Navarro.

The Associated Press contributed to this report.