RIYADH, Saudi Arabia – Coco Gauff defeated top-ranked Aryna Sabalenka on Friday to set up a showdown with Olympic champion Zheng Qinwen in the final of the WTA Finals.

Gauff generated six break points to Sabalenka’s four in the 7-6 (4), 6-3 victory and built on early momentum in the opening set tiebreak, which she carried into the second set.

At twenty years old, she is the youngest player to reach the final of the WTA Finals since Caroline Wozniacki in 2010.

Zheng earlier defeated Wimbledon champion Barbora Krejcikova 6-3, 7-5 to book her place in Saturday’s final.

Zheng continued her remarkable season by reaching the decider in her first appearance. The Chinese player has won 31 of her 36 matches since Wimbledon, more than anyone on the tour.

Zheng hit nine aces as she defeated Krejcikova in 1 hour and 40 minutes.