Jamaica, the defending women’s 4x400m relay champions, pulled up on the second leg at the London World Championships.
Anneisha McLaughlin-Whiby, second leg runner, suffered a hamstring injury.
Jamaica’s Novlene Williams-Mills, who won her first big international medal, a 4x400m bronze, at the 2004 Athens Olympics and has overcome cancer to continue her career, was left standing at the start-finish line, denied a career farewell run by her team-mate’s misfortune.
The US won the gold in 3:19.02, Britain took the in silver with a time of 3:25.00 ahead of Poland, bronze medallists in 3:25.41.
Jamaican relay team – Chrisann Gordon to Anneisha McLaughlin-Whiby to Shericka Jackson to Novlene Williams-Mills.