RIO DE JANEIRO, BRAZIL - AUGUST 17: (L-R) Bronze medalist Kristi Castlin, gold medalist Brianna Rollins and silver medalist Nia Ali of the United States react after the Women's 100m Hurdles Final on Day 12 of the Rio 2016 Olympic Games at the Olympic Stadium on August 17, 2016 in Rio de Janeiro, Brazil. (Photo by Matthias Hangst/Getty Images)
RIO DE JANEIRO, BRAZIL - AUGUST 17: Bronze medalist Kristi Castlin (C) celebrates with gold medalist Brianna Rollins and silver medalist Nia Ali of the United States after the Women's 100m Hurdles Final on Day 12 of the Rio 2016 Olympic Games at the Olympic Stadium on August 17, 2016 in Rio de Janeiro, Brazil. (Photo by Matthias Hangst/Getty Images)
RIO DE JANEIRO, BRAZIL - AUGUST 17: (L-R) Bronze medalist Kristi Castlin, silver medalist Nia Ali and gold medalist Brianna Rollins of the United States pose with Ali's son Titus after the Women's 100m Hurdles Final on Day 12 of the Rio 2016 Olympic Games at the Olympic Stadium on August 17, 2016 in Rio de Janeiro, Brazil. (Photo by Alexander Hassenstein/Getty Images)
