BYDGOSZCZ, POLAND - JULY 20: Nia Jack from Virgin Islands, Khalifa St Fort from Trinidad and Tobago and Hannah Brier from Great Britain compete in women's 100 metres qualification round during the IAAF World U20 Championships at the Zawisza Stadium on July 20, 2016 in Bydgoszcz, Poland.  (Photo by Adam Nurkiewicz/Getty Images for IAAF)