Coco Gauff stunned world No. 1 Aryna Sabalenka in the semifinals of the WTA Finals on Friday, becoming the youngest player since 2010 to reach the final of this tournament.

Join Tanya Aldred for updates as two players in the final for the first time battle for the title in Riyadh.   18:58 Third set: Zheng 6-3, 4-6, 5-5. Gauff* (*denotes next server) A coursing cross court forehand from Zheng wins the first point but Gauff comes back to win a scintillating rally.

Gauff stirred some controversy among fans when she lost to Krejcikova in her final group stage match after beating world No. 2 Iga Swiatek and fellow American Jessica Pegula. The loss eliminated Swiatek and some fans felt Gauff lost on purpose.