American tennis sensation Coco Gauff ended her season in style Saturday, rallying to defeat China’s Zheng Qinwen 3-6 6-4 7-6 (2) to win the WTA Finals in Riyadh, Saudi Arabia. The 20-year-old capped a run that saw her become the youngest player since Maria Sharapova in 2004 to win the prestigious tournament reserved for the best players in the world.

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.

Coco Gauff may be saving the best for last. In what is shaping up to be potentially her best week of the season, Coco Gauff beat the world No. 1 Aryna Sabalenka in two turbulent sets Friday to set up a championship battle against the Olympic gold medalist Zheng Qinwen this weekend at the WTA Tour Finals.