British sprinter Dwain Chambers is determined to qualify for the Olympics and do his best for the country at this summer's Games.
The 34-year-old, who was suspended for two years in 2004 after testing positive for a banned steroid, was prevented from competing at the Beijing Games but is eligible for selection for London after the British Olympic Association's lifetime ban for drugs cheats was last month ruled non-compliant by the Court of Arbitration for Sport.
He accepts he will be unable to win over all the doubters, but he is nevertheless determined to earn his place in Team GB.
"All I can do is say I am sorry," he said. "I have made a mistake, a massive mistake, and all I want is another chance to correct it, a chance to do the best for my country.
"To run in my home Olympics? I would say it was a dream come true but it's not. Because I didn't even bother dreaming. I thought I would be sitting at home watching.
"Now the reality is if I qualify I will be there. That is something I will cherish. It would be an honour and I want to make sure I do it with pride and enjoy it. But I know it won't please everybody."