USA dominates in first mixed 4x400 relay, Allyson Felix breaks Usain Bolt's record | NBC Sports

   2019-09-29 22:28:42
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USA dominates in first mixed 4x400 relay, Allyson Felix breaks Usain Bolt's record | NBC Sports by NBC Sports
The entire U.S. mixed 4x400 relay team made history, but Allyson Felix made history of her own, breaking Usain Bolt's record for most world titles. » Subscribe to NBC Sports: https://www.youtube.c...    Read more

Tags : Track and Field, Olympics, NBC Sports, NFL, NBA, MLB, NHL, PGA, Golf, Athlete, Tennis, allyson felix, olympics, the o...
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