Iga Swiatek advances to the semifinals at Indian Wells, while Caroline Wozniacki withdraws due to injury.

Swiatek of Poland overcame a 4-1 deficit to win the opening set 6-4, and Wozniacki of Denmark was forced to call a medical timeout.

The former world champion continued, but she was only able to play one more game—a loss—before she had to withdraw.

American Coco Gauff defeated China’s Yuan Yue 6-4, 6-3, to advance to the semi-finals where she will face Maria Sakkari.

Play at Indian Wells is delayed by bees, stinging Alcaraz.

In her last three outings at the California event, Swiatek has advanced to the final four. On Friday, she will face Ukrainian Marta Kostyuk.