London 2012: the men's 100m, medals and Mo – in pictures

Before the action begins, Greg Rutherford takes to the podium to huge applause and cries as he collects his gold medal for his performance in the long jump
Photograph: Tom Jenkins/Guardian

Then the racing starts … Perri Shakes-Drayton looks comfortable in the 400m hurdles heats for Great Britain, winning in 54.62 seconds
Photograph: Tom Jenkins/Guardian

Ghfran Almouhamad of Syria looks rather more exhausted after her hurdles heat
Photograph: Tom Jenkins/Guardian

The Jamaican athlete Nickiesha Wilson has one thing on her mind – and in her hair
Photograph: Tom Jenkins/Guardian

First to go in the men's 100m semi-finals is Asafa Powell. He clocks 9.94sec, which is only good enough for third
Photograph: Tom Jenkins/Guardian

Justin Gatlin has taken that race in style, running 9.82sec. Churandy Martina pipped Powell to the second automatic qualification spot. Powell must now wait for the results of the following two semis
Photograph: Tom Jenkins/Guardian

Usain Bolt, the reigning Olympic champion, is drawn alongside Britain's Dwain Chambers. But it's Ryan Bailey (out of the picture) who is of most concern
Photograph: Tom Jenkins/Guardian

Bolt cruises home in 9.87, while Bailey takes second. Chambers has run a decent time of 10.05, but will that be enough?
Photograph: Tom Jenkins/Guardian

In the final semi, Tyson Gay looks powerful and notches 9.90
Photograph: Tom Jenkins/Guardian

Yohan Blake is faster, though, running 9.85. Britain's Adam Gemili races to a creditable third place in 10.06. So the 100m finalists are as follows: Thompson, Powell, Gay, Blake, Gatlin, Bolt, Bailey, Martina
Photograph: Tom Jenkins/Guardian

With the sprint action pausing, it's time for Mo Farah to receive his gold medal for the stunning run he produced in the 10,000m
Photograph: Tom Jenkins/Guardian

Back on the track, Christine Ohuruogu wins silver with an amazing run down the back straight in the 400m
Photograph: Tom Jenkins/Guardian

So it's time for the big one, the men's 100m final
Photograph: David Levene/Guardian

Usain Bolt is as confident as ever, even joining in when the loudspeakers urge the crowd to shush
Photograph: Graeme Robertson/Guardian

Banks of photographers wait in anticipation, uncertain as to which lane they should aim their lenses at
Photograph: David Levene/Guardian

Bolt makes a slow start while Gatlin gets out fast
Photograph: Graeme Robertson/Guardian

... but Bolt strides back into contention ...
Photograph: Graeme Robertson/Guardian

It's extremely tight as they approach the line - unlike in Beijing four years ago, there'll be no chance of anyone cruising over the finish line
Photograph: David Levene/Guardian

Gatlin and Yohan Blake are both in contention, as is Tyson Gay (not pictured)
Photograph: Tom Jenkins/Guardian

Bolt Bolt flies across the line in first place to claim the gold medal
Photograph: Tom Jenkins/Guardian

He's beaten his rivals by a metre to retain his Olympic title Photograph: Dan Chung/Guardian/Guardian

It takes half a second before he realises he's won - and he's clocked an impressive time of 9.64 seconds despite his start
Photograph: Tom Jenkins/Guardian

Bolt performs his customary pose in celebration Photograph: Dan Chung/Guardian/Guardian

And then runs off draped in the Jamaican flag
Photograph: Graeme Robertson/Guardian

Yohan Blake is celebrating too after finishing second. He edged Gatlin into third, making it a fabulous night for Jamaican sprinting
Photograph: Graeme Robertson/Guardian