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

Jamaica's Christine Day, Shericka Jackson, Stephenie Ann McPherson and Novelene Williams-Mills pose with their gold medals on the podium after winning the women's 4x400m relay at the World Athletics Championships at the Bird's Nest stadium in Beijing, Sunday, Aug. 30, 2015. (AP Photo/Ng Han Guan)

---