Preview: women´s 400m hurdles - IAAF World U20 Championships Tampere 2018
(IAAF News)

It´s no surprise that success at the IAAF World U18 Championships has a strong correlation with success at the IAAF World U20 Championships, and one athlete who´ll be hoping to continue that trend is South Africa´s Zeney van der Walt, who will be the clear favourite for 400m hurdles gold in Tampere in the absence of world leader Sydney McLaughlin.