Record-setting Chinese sprinter Chen Yujie is going to have to run faster if she wants to make the Los Angeles Olympics, after World Athletics made it harder to qualify for the women’s 100 metres. Chen grabbed gold in Japan in September, crossing the line in an Asian Games-record 11.06 seconds, just under the 11.07 entry standard for the Paris Olympics in 2024. However, on Wednesday, the global governing body lowered that mark to 10.96, leading Chen’s coach Wu Yacun to suggest his 17-year-old...