Coco Gauff and Jessica Pegula will square off in an All-American final on Sunday at the Wuhan Open in China. The sixth-seeded Pegula snapped No. 1 seed Aryna Sabalenka's unbeaten streak at the WTA 1000 tournament and rallied for a 2-6, 6-4, 7-6 (2) victory over the Belarusian in Saturday's first semifinal.