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Jonathan Sacoor of Belgium celebrates after winning men's 400 meters at the IAAF World U20 Championships in Tampere, Finland on July 13, 2018. Sacoor won the gold medal with 45.03 seconds. (Xinhua/Matti Matikainen)
Jonathan Sacoor of Belgium celebrates after winning men's 400 meters at the IAAF World U20 Championships in Tampere, Finland on July 13, 2018. Sacoor won the gold medal with 45.03 seconds. (Xinhua/Matti Matikainen)