Gold medallist USA's Brianna Rollins (C) poses with silver medallist USA's Nia Ali (L) and bronze medallist USA's Kristi Castlin on the podium of the Women's 100m Hurdles during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 18, 2016.   / AFP / Damien MEYER        (Photo credit should read DAMIEN MEYER/AFP/Getty Images)