World No. 5 and US Open contender Casper Ruud just landed on the wrong end of ATP history on Wednesday. With Ruud’s shocking 4-6, 7-5, 2-6, 6-0, 2-6 loss to China’s Zhang Zhizhen, the latter became the first Chinese player to topple an ATP Top 5 player in 50 years, per ESPN Stats & Info. […]