IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Andrew Pozzi of Great Britain during the Men's 60m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Andrew Pozzi of Great Britain during the Men's 60m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Andrew Pozzi of Great Britain during the Men's 60m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Justyna Swiety-Ersetic, Patrycja Wyciskiewicz, Aleksandra Gaworska, Malgorzata Holub-Kowalik finish with Silvers at the Women's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Justyna Swiety-Ersetic, Patrycja Wyciskiewicz, Aleksandra Gaworska, Malgorzata Holub-Kowalik finish with Silvers at the Women's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Women's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Shakima Wimbley of the USA during the Women's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Michael Cherry of the USA during the Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Ayomide Folorunso of Italy during the Women's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Men's 1500m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Fred Kerley of the USA leads during the Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Fred Kerley of the USA leads during the Men's 4x400m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Samuel Tefera of Etheopia celebrates winning the Men's 1500m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Jake Wightman of Great Britain during the Men's 1500m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Men's 1500m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Francine Niyonsaba of Burundi celebrates winning Women's 800m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Raevyn Rogers of the USA after the Women's 800m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Francine Niyonsaba of Burundi wins the Women's 800m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)

IAAF World Indoor Championships - Day Three

BIRMINGHAM, ENGLAND - MARCH 04: Francine Niyonsaba of Burundi Women's 800m Final on Day 4 of the IAAF World Indoor Championships at Arena Birmingham on March 4, 2018 in Birmingham, England. (Photo by Andy Astfalck/Getty Images)