United States wins women's 4x100 meter relay at worlds

United States wins women's 4x100 meter relay at worlds

DAEGU, South Korea - (From L) Bianca Knight, Carmelita Jeter, Marshevet Myers and Allyson Felix, members of the U.S. women's 4x100-meter relay squad, celebrate their victory carrying the Stars and Stripes at the world athletics championships in Daegu, South Korea, on Sept. 4, 2011. The United States won the gold medal in 41.56 seconds.

United States wins women's 4x100 meter relay at worlds

United States wins women's 4x100 meter relay at worlds

DAEGU, South Korea - Allyson Felix (L), second runner of the U.S. women's 4x100-meter relay squad, celebrates their victory with anchor Carmelita Jeter, carrying the Stars and Stripes, at the world athletics championships in Daegu, South Korea, on Sept. 4, 2011. The United States won the gold medal in 41.56 seconds.

United States wins women's 4x100 meter relay at worlds

United States wins women's 4x100 meter relay at worlds

DAEGU, South Korea - (From L) Bianca Knight, Carmelita Jeter, Marshevet Myers and Allyson Felix, members of the U.S. women's 4x100-meter relay squad, celebrate their victory carrying the Stars and Stripes at the world athletics championships in Daegu, South Korea, on Sept. 4, 2011. The United States won the gold medal in 41.56 seconds. (Kyodo)

United States wins women's 4x100 meter relay at worlds

United States wins women's 4x100 meter relay at worlds

DAEGU, South Korea - Allyson Felix (L), second runner of the U.S. women's 4x100-meter relay squad, celebrates their victory with anchor Carmelita Jeter, carrying the Stars and Stripes, at the world athletics championships in Daegu, South Korea, on Sept. 4, 2011. The United States won the gold medal in 41.56 seconds. (Kyodo)