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Britain's Mo Farah (C) competes in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)

Britain's Mo Farah (C) competes in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016.   / AFP / Adrian DENNIS        (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)

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(L-R) Ethiopia's Hagos Gebrhiwet, Britain's Mo Farah, Eritrea's Goitom Kifle, Belgium's Bashir Abdi and Azerbaijan's Hayle Ibrahimov compete in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)

(L-R) Ethiopia's Hagos Gebrhiwet, Britain's Mo Farah, Eritrea's Goitom Kifle, Belgium's Bashir Abdi and Azerbaijan's Hayle Ibrahimov compete in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016. / AFP / Adrian DENNIS        (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)

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Britain's Mo Farah competes in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016. / AFP / OLIVIER MORIN (Photo credit should read OLIVIER MORIN/AFP via Getty Images)

Britain's Mo Farah competes in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016.   / AFP / OLIVIER MORIN        (Photo credit should read OLIVIER MORIN/AFP via Getty Images)

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Britain's Mo Farah (L) talks with USA's Bernard Lagat (C) and USA's Hassan Mead after they competed in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016. / AFP / OLIVIER MORIN (Photo credit should read OLIVIER MORIN/AFP via Getty Images)

Britain's Mo Farah (L) talks with USA's Bernard Lagat (C) and USA's Hassan Mead after they competed in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016.   / AFP / OLIVIER MORIN        (Photo credit should read OLIVIER MORIN/AFP via Getty Images)

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Britain's Mo Farah competes in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016. / AFP / Jewel SAMAD (Photo credit should read JEWEL SAMAD/AFP via Getty Images)

Britain's Mo Farah competes in the Men's 5000m Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 17, 2016.   / AFP / Jewel SAMAD        (Photo credit should read JEWEL SAMAD/AFP via Getty Images)