sentences:  Pearson won the gold medal in the 100 metres hurdles at the 2017 World Championships in London with a time of 12.59.Pearson was to compete in the 100 metre hurdles and 4x100 relay but later withdrew due to an Achilles tendon injury.On 5 August 2019, Pearson announced her retirement from competitive athletics, stating that she did not believe that she would be ready for the 2020 Olympic Games.