Oscar Pistorius brought the Paralympic track and field programme to a close in style, winning his favoured 400 metres event and beating his nearest opponent by almost five seconds.
Victory for the 25-year-old South African never looked in any doubt from the gun, as he struck out on his own to lead coming into the last half-lap and was roared across the line by the packed 80,000-capacity Olympic Stadium in just over 46 seconds.
The American pair of Blake Leeper and David Prince took silver and bronze respectively.
Pistorius, the only man in the field to run under 50 seconds for the one-lap sprint and the first double-amputee to compete at the Olympics last month, won the 100m, 200m and 400m treble in Beijing four years ago.
But he lost both of the shorter sprint titles to Britain's Jonnie Peacock and Alan Oliveira of Brazil.
Far from appearing disappointed, the sprinter says he was proud to have taken part in what organisers have billed as the largest and most high-profile Paralympics since the Games began in 1960.