Alina Shukh of Ukraine competes during the women's javelin throw event at the IAAF (International Association of Athletics Federations) World U20 Championships in Tampere, Finland, July 11, 2018. Alina Shukh won the gold medal with 55.95m. (Photo:Xinhua/Matti Matikainen)

Yuki Hashioka of Japan competes during the men's long jump event at the IAAF (International Association of Athletics Federations) World U20 Championships in Tampere, Finland, July 11, 2018. Hashioka won the gold medal with 8.03m. (Photo:Xinhua/Matti Matikainen)

Gold medalist Madison-Lee Wesche (C) of New Zealand, silver medalist Zhang Linru (L) of China and Jorinde Van Klinken of the Netherlands pose on the podium during the awarding ceremony for the women's shot put event at the IAAF (International Association of Athletics Federations) World U20 Championships in Tampere, Finland, July 11, 2018. (Photo:Xinhua/Matti Matikainen)