Stevens Point WI senior and recent National Gatorade Track and Field Athlete of the Year for 2021, Roisin Willis, talks about watching Athing Mu's Gold Medal and American record 800-meter performance on Tuesday. Willis, who competed at the U.S. Olympic Team Trials in June, advancing to the semifinals, was the last high school runner to beat Athing Mu in an 800 race in 2019 at New Balance Nationals Indoor. Willis, who owns a 2:00.78, breaks down Mu's race and what she's learned along the way from Mu and others.