 Nagasu represented the United States at the 2010 Winter Olympics at the age of 16 and placed 4th in the ladies' event.In 2017, she landed the very difficult triple Axel jump for the first time in international competition at the US International Figure Skating Competition.During her free skate in the team event at the 2018 Olympics, she became the first American female figure skater to land a triple Axel at the Olympics, and the third woman from any country to do so.