Silver medallist US athlete Courtney Frerichs (L), gold medallist US athlete Emma Coburn (C) and bronze medallist Kenya's Hyvin Kiyeng Jepkemoi (R) pose on the podium during the victory ceremony for the women's 3000m steeplechase athletics event at the 2017 IAAF World Championships at the London Stadium in London

Silver medallist US athlete Courtney Frerichs (L), gold medallist US athlete Emma Coburn (C) and bronze medallist Kenya's Hyvin Kiyeng Jepkemoi (R) pose on the podium during the victory ceremony for the women's 3000m steeplechase athletics event at the 2017 IAAF World Championships at the London Stadium in London

Silver medallist Authorised Neutral Athlete Valeriy Pronkin (L), gold medallist Poland's Pawel Fajdek (C) and bronze medallist Poland's Wojciech Nowicki (R) pose on the podium during the victory ceremony for the men's hammer throw athletics event at the 2017 IAAF World Championships at the London Stadium in London on August 12, 2017. / AFP PHOTO / Daniel LEAL-OLIVAS

Silver medallist ta Ivory Coast's Marie-Josée Ta Lou (L), gold medallist Netherlands' Dafne Schippers (C) and bronze medallist Bahamas's Shaunae Miller-Uibo (R) pose on the podium during the victory ceremony for the women's 200m athletics event at the 2017 IAAF World Championships at the London Stadium in London