Asher-Smith won the 2013 European Junior 200m title, 2014 World Junior 100m title, and in July 2015, she became the first British woman to legally run under 11 seconds for the 100 m. She then broke Kathy Cook's 31-year-old British 200 m record when finishing 5th at the 2015 World Championships, and in this distance, she placed 5th at the 2016 Olympics and 4th at the 2017 World Championships. Asher-Smith is also a four-time European individual champion, and one-time 100 m Diamond League