RIO DE JANEIRO, BRAZIL - AUGUST 18:  Asbel Kiprop of Kenya, Taoufik Makhloufi of Algeria, Nicholas Willis of New Zealand Ben Blankenship of the United States and Charlie Grice of Great Britain compete in the Men's 1500m Semifinal on Day 13 of the Rio 2016 Olympic Games at the Olympic Stadium on August 18, 2016 in Rio de Janeiro, Brazil.  (Photo by Cameron Spencer/Getty Images)