Dawn Harper Nelson takes silver behind Sally Pearson in the 100m hurdles at the 2017 London World Championships

Sally Pearson (R) takes 100m hurdles gold from Dawn Harper Nelson (L)

Dawn Harper Nelson and Sally Pearson share a hug after the 100m hurdles final at the 2017 London IAAF World Championships

2017 World Championships 100m hurdles podium (L-R): runner-up Dawn Harper Nelson, winner Sally Pearson, third-placed Pamela Dutkiewicz