Zheng Qinwen stuns Madison Keys in US Open third-round comeback
In New York, China's Zheng Qinwen, the Paris Olympics gold medallist, came from 0-5 down in the final set to beat Madison Keys 1-6, 7-6 (7/3), 7-5 and reach the US Open last 16. Zheng, who had to qualify after a lengthy recovery from elbow surgery, won the last seven games of the match.