World number two Iga Swiatek and world number three Coco Gauff both secured their spots in the semi-finals of the WTA Finals in Cancun, Mexico.
Four-time Grand Slam champion Iga Swiatek beat American Coco Gauff in straight sets at the WTA Finals in Mexico.
Iga Swiatek brought an end to Coco Gauff's 16-game winning streak to set up a clash with unseeded Liudmila Samsonova in the China Open final.
Coco Gauff extended her impressive win streak to 16 matches with a straight-sets win at the China Open in Beijing on Friday.
US Open champion Coco Gauff overcame Veronika Kudermetova in a hard-fought straight-sets victory to book herself a place in the China Open quarter-finals.
Coco Gauff was back to winning ways at the China Open in Beijing after the US Open champion made her return to the court.