Gallery | IAAF WORLD CHAMPIONSHIP 2015 Day 9 | China Athletics Worlds

Jamaica's Novlene Williams-Mills celebrates after anchoring the Jamaican team to the gold medal in the women's 4x400m relay ahead of United States' Francena Mccorory at the World Athletics Championships at the Bird's Nest stadium in Beijing, Sunday, Aug. 30, 2015. (AP Photo/Andy Wong)

---