The Open is the only Grand Slam tournament where women use different balls than men, and the Wilson ‘regular-duty’ ball has gotten into some players’ heads.
In case you missed it: The defending women’s champion, Emma Raducanu, is out, and the defending men’s champion, Daniil Medvedev, is set for a finals-worthy match with Nick Kyrgios.
The 18-year-old has advanced to the round of 16 in singles at the U.S. Open for the first time in her career. On Sunday, she will face the unseeded Shuai Zhang of China.