Women's 4x400m Relay Final | World Athletics Championships London 2017

Watch the Women's 4x400m Relay Final from the 2017 World Athletics Championships, where reigning Olympic winners team USA claimed World Championships gold. #WorldChampionships #TeamUSA #Relay #WorldAthletics #Athletics Watch the other finals on our 2017 World Championships playlist -    • 2017 World Championships | The Finals   Subscribe to our channel - https://www.youtube.com/user/IAAF2012... ⭐️ Follow us on Twitter -   / iaaforg   ⭐️ ⭐️ Follow us on Facebook -   / worldathleticsclub   ⭐️ ⭐️ Follow us on Instagram -   / iaaf_athletics   ⭐️ Make sure you subscribe for athletics highlights, interviews with the athletes, training tips and more!