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The 19-year-old track runner from Trenton became the first American woman to win a gold medal in the 800-meter race in more than 50 years Tuesday night at the 2020 Tokyo Olympics.
Mu, who was in the lead for nearly the entire race, finished in 1 minute and 55.21 seconds.
Her time is the new American record and fifth-best in Olympic history.
Madeline Manning was the last woman to win gold in the 800-meter race. That was in 1968.
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