The 23-year-old rising Swiss athlete was leading the race at 650m when, around the final bend, she tripped and fell

Keely Hodgkinson controlled her semi-final and progressed alongside Femke Broeders-Bol but Audrey Werro fell and finished last

Favorite toute désignée sur la distance, la meilleure performeuse mondiale de l'année est tombée à 200 mètres de la ligne, jeudi, et ne devrait pas disputer la finale.