BYDGOSZCZ, POLAND - JULY 19: Filippo Tortu from Italy competes in men's 100 meters during day one of the IAAF World U20 Championships at the Zawisza Stadium on July 19, 2016 in Bydgoszcz, Poland. (Photo by Piotr Hawalej /Getty Images for IAAF)
BYDGOSZCZ, POLAND - JULY 19: Filippo Tortu from Italy competes in men's 100 meters during day one of the IAAF World U20 Championships at the Zawisza Stadium on July 19, 2016 in Bydgoszcz, Poland. (Photo by Piotr Hawalej /Getty Images for IAAF)