Coco Gauff sinks Aryna Sabalenka to set up WTA Finals showdown with Zheng | Coco Gauff

When Aryna Sabalenka and Coco Gauff stared each other down just a month ago in Wuhan, Gauff clearly had the edge as she methodically established a set and break lead. But then, out of nowhere, her serve spectacularly crumbled. Although she fought valiantly until the end, she was torpedoed by an…