IAAF World Indoor Championships

PORTLAND, March. 21, 2016 (Xinhua) -- Natasha Hastings of the Team of the United States starts off during the women's 4x400m relay final...

PORTLAND, March. 21, 2016 (Xinhua) -- Natasha Hastings of the Team of the United States starts off during the women's 4x400m relay final at the IAAF World Indoor Championships at the Oregon Convention Center in Portland, the United States, on March 20, 2016. Team of the United States claimed the title with 3 munites 26.38 seconds. (Xinhua/Yang Lei)