Kadia Rock has a shot at a medal after booking her spot in the final of the women’s 400 metres last night at the World Under-20 Championships in Eugene, Oregon. Competing in semi-final one, Rock was an automatic qualifier after finishing third in 53.25 seconds. In the women’s 200 metres, Ariel Archer was disqualified. Amir Thompson, son of Olympic bronze medallist Obadele Thompson, cruised into the semi-finals by winning heat one of the 200 metres in 20.49 seconds. Jayden Green was equally impressive, winning heat seven of the 200 metres in 20.58 seconds.