American women's tennis star Coco Gauff advanced to the quarterfinals of the China Open in Beijing on Monday, September 29, but not before a tense mid-match clash with Swiss opponent Belinda Bencic over accusations of "mind games." The incident went down in the second set, with Bencic leading 6-4, 2-3 and serving at break point. After Bencic dropped the previous point with a poor drop shot that Gauff, 21, chased down for a winner, the Swiss star snapped at Gauff's player's box, telling them to "shut up" and claiming they had celebrated before her serve.