Defending champion Nia Ali, right, of the United States crashed out in the women's 100m hurdles heats ©Getty Images

Picture Gallery

Decathlon competition got underway on the penultimate day of the Championships with the men's 100 metres ©Getty Images
Decathlon competition got underway on the penultimate day of the Championships with the men's 100 metres ©Getty Images
Australian Liz Clay also came a cropper in the women's 100m hurdles heats ©Getty Images
Australian Liz Clay also came a cropper in the women's 100m hurdles heats ©Getty Images
Maicel Uibo of Estonia, husband of women's 400m world champion Shaunae Miller-Uibo, in action in the shot put discipline of the decathlon ©Getty Images
Maicel Uibo of Estonia, husband of women's 400m world champion Shaunae Miller-Uibo, in action in the shot put discipline of the decathlon ©Getty Images
Serbia's Ivana Vuleta makes a splash in the sand during women's long jump qualifying ©Getty Images
Serbia's Ivana Vuleta makes a splash in the sand during women's long jump qualifying ©Getty Images
Evelise Veiga of Portugal in action in women's long jump qualification ©Getty Images
Evelise Veiga of Portugal in action in women's long jump qualification ©Getty Images
Germany's Tim Nowak prepares to throw in the men's decathlon shot put ©Getty Images
Germany's Tim Nowak prepares to throw in the men's decathlon shot put ©Getty Images
Australian champion Samantha Dale competes in women's long jump qualifying ©Getty Images
Australian champion Samantha Dale competes in women's long jump qualifying ©Getty Images