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

No. 12 seed Mirra Andreeva stormed past No. 2 Iga Swiatek 6-3, 6-3 on Thursday to become the youngest player ever to reach the semifinals at the Dubai Tennis Championships.