After a stumbling performance in the semi-final, many were doubting whether Usain Bolt would be able to hold off the challenge of his ageing but controversial challenger, the 2004 Olympic gold medallist Justin Gatlin.
He was 2/1 with some bookmakers - see Owen Gibson's gleeful tweet after the race.
Recommended
Testing positive in 2006, Gatlin returned to competition in 2010. His recent burst of good form has been greeted with a mixture of scepticism and dismay.
Steve Cram wasn't afraid to risk charges of bias in his commentary at the outset and he exploded with joy at the race's end.
We thank you for following our minute-by-minute coverage of the race also.
