United States' Allyson Felix, Jasmine Todd, English Gardner and Jenna Prandini celebrate after finishing second in the women’s 4x100m relay final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 29, 2015.
United States' Allyson Felix, Jasmine Todd, English Gardner and Jenna Prandini celebrate after finishing second in the women’s 4x100m relay final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 29, 2015. David J. Phillip AP
United States' Allyson Felix, Jasmine Todd, English Gardner and Jenna Prandini celebrate after finishing second in the women’s 4x100m relay final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 29, 2015. David J. Phillip AP