Kenya's Faith Chepngetich Kipyegon (C), US athlete Jennifer Simpson (R) and South Africa's Caster Semenya (L) cross the finish line of the final of the women's 1,500m athletics event at the 2017 IAAF World Championships at the London Stadium in London on August 7, 2017.
Kenya's Faith Chepngetich Kipyegon won ahead of US athlete Jennifer Simpson and South Africa's Caster Semenya. / AFP PHOTO / ANTONIN THUILLIER        (Photo credit should read ANTONIN THUILLIER/AFP/Getty Images)