Mo Farah became Britain's first 5000 metres world champion with a sensational victory in South Korea, giving his country a much-needed boost ahead of the 2012 London Olympics.
Farah, who had the gold medal in the 10000 agonisingly snatched from his grasp by Ibrahim Jeilan, looked in trouble early on when he grabbed a cup of water from a table on the track and rubbed it into his scalp while running at the back of the pack.
But the Somali-born athlete moved up the field at the halfway mark and dug deep over the final 600m to see off American Bernard Lagat.
Ethiopia's Imane Merga crossed the line in third place but was later disqualified for stepping inside the curb and countryman Dejen Gebremeskel was promoted to the bronze medal position.
Farah, the fastest man in the world over 5000 and 10000 coming into the championships in Daegu, won in a time of 13 minutes 23.36.