World No. 2 Swiatek dealt shocking loss by Russian teen Andreeva in Dubai quarterfinals

No. 2-ranked Iga Swiatek lost to a player younger than 18 for the first time on tour when she was stunned by Mirra Andreeva in the Dubai Championships quarterfinals on Thursday.

The 17-year-old Andreeva won 6-3, 6-3 to become the youngest semifinalist in Dubai's 24-year history.

Swiatek took their only previous match last August in Cincinnati, losing the first set and winning 7-5 in the third. She conceded the first again and was a break up in the second, but Andreeva reeled off the last five games.

"I was nervous before the match," No. 14-ranked Andreeva said. "I told myself I played great in our last match and I just need to keep playing aggressive."

It's her fifth win over a top-10 player and second over a No. 2 — she beat Aryna Sabalenka in the French Open quarterfinals last year.

The Russian teen will next face sixth-seeded Elena Rybakina or Sofia Kenin.

Clara Tauson, the Dane who knocked out Sabalenka on Wednesday, defeated Linda Noskova of the Czech Republic 7-6 (4), 6-4 to reach her third semifinals of the year. She will play Sorana Cirstea or Karolina Muchova.

Also Thursday, Montreal native Felix Auger-Aliassime faces Russia's Daniil Medvedev in men's quarters.

Auger-Aliassime advanced on Wednesday when second-round opponent Hamad Medjedovic withdrew with a right leg injury.

Ranked 23rd in the world, the Canadian is seeking his third ATP Tour title of the season.

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