Dwain Chambers has been forced to pull out of the British Indoor Championships and trials in Sheffield this weekend through injury.
It means he won't be able defend his national 60m title. It is also a set back in his efforts to guarantee selection in the British Team for the European Chamionsips in Gothenburg next month. The British team will be announced on the 18th February.
Former drugs cheat Dwain Chambers has won his 100m heat in a season's best time of 10.02 seconds - faster than Usain Bolt's qualifying time.
The crowd greeted his appearance with a huge roar of approval.
Dwain Chambers has been selected to represent Team GB at the London 2012 Olympic Games.
The 34-year-old is able to compete after the British Olympic Association's policy of lifetime bans for drug cheats was overturned.
In 2003, he was given a two-year ban from the sport after testing positive for the drug THG.
The selectors took into account the 'A' times he ran last summer, which put him in contention for a spot on the team.
"It is a real honour to be selected as part of Team GB today. For me representing my country in an Olympics is a privilege that should never be taken for granted," said Chambers, who is set to compete in the 100m and 4 x 100m events in London.
Dwain Chambers today kept his Olympic dreams alive by winning the 100 metres at the trials in Birmingham.
Chambers, 34, used all his experience to claim his sixth national title at the Alexander Stadium, clocking 10.25 seconds to edge out teenager Adam Gemili, with James Dasaolu in third.
British sprinter Dwain Chambers finished fifth in the 100-metre race at the Golden Spike event in Ostrava, Czech Republic. He ran a time of 10.28 seconds.
Usain Bolt has won his first race in Europe in 2012. He ran a time of 10.04 seconds over 100 metres.
The Jamaican runner beat British sprinter Dwain Chambers and an international line-up at the Golden Spike event in Ostrava, Czech Republic.
The Jamaican sprinter Usain Bolt is playing air guitar along with the music as he warms up for the 100-metre race in Ostrava in the Czech Republic.
British sprinter Dwain Chambers and Jamaican world record holder Usain Bolt are lining up on their starting blocks.
The two are sprinting head-to-head over 100 metres at the Golden Spike event in Ostrava, Czech Republic.