TOKYO—Athing Mu of the United States won the gold medal in the Olympic women’s 800 meters final on Tuesday, her country’s first victory in the event in more than half a century, as her compatriot Raevyn Rogers grabbed bronze.
The absence of South Africa’s double champion Caster Semenya, ruled ineligible due to heightened testosterone levels, opened up the field to a new winner and the 19-year-old Mu took full advantage.
