Defiant Coco Gauff fought back to beat China's Zheng Qinwen 3-6 6-4 7-6(2) in a three-hour thriller on Saturday and become the youngest player to win the WTA Finals in 20 years and the first American champion since Serena Williams a decade ago.

The tie-break was a solo performance by Gauff, who dominated her rival mentally and physically to sensationally close the season with a deserved victory given what was seen at the WTA Finals in Riyadh.

Coco Gauff (No. 3 ranking) will meet Qinwen Zheng (No. 7) in the final at the Akron WTA Finals Guadalajara on Saturday, November 9.Gauff’s last competition was a win, 7-5, 6-2, over Katie

For the first time in her career, Coco Gauff won the WTA Finals. Gauff took down Zheng Qinwen in three sets, 3-6, 6-4, 7-6 (2) during the final on Saturday

Coco Gauff has won the WTA Finals for the first time by rallying to beat Olympic champion Zheng Qinwen 3-6, 6-4, 7-6 (2) in the final in Riyadh.

She is the second Chinese woman player after Li Na in 2013 to reach the last four of this prestigious season-ending tournament. Read more at straitstimes.com.

Coco Gauff won the WTA Tour Finals for the first time with a comeback win over Zheng Qinwen in Riyadh Saturday. World No. 3 Gauff recovered from losing the first set 6-3, from going down 1-3 in the second set and from 3-5 in the third to win over $4.

By clinching the trophy, Gauff pocketed a record $4,805,000 – which is the largest ever payout at a professional, sanctioned tour event.