World 100m record holder Bolt yet to decide if he will double up in Beijing

The decision as to whether the Jamaican, who ran a new world record time of 9.72sec in New York at the weekend, runs in Beijing will be taken by his coach Glen Mills.

Bolt accepts the situation, saying: "This is the fourth year I have been with my coach and he has made nothing but good decisions. Whatever he decides I am sure it will be for a good reason."

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Dedication: Usain Bolt

Why would he argue? On Tuesday he admitted that while the 100m may offer his best chance of gold, the 200m remains his goal.

"I have dedicated my whole life to it and I would like to get a gold medal in the Olympic Games. I want to be one of the best ever," said Bolt.

Mills will let Bolt run the 100m only if he judges that four rounds of it will not detract from the half-lap event that follows.

For now, he has agreed only that Bolt should run both sprints at the Jamaican national championships this month.

"We have to look at how the preparations go between now and August," said Mills.

In the trials Bolt will confront Asafa Powell, whose record he broke.

"I don't think it will be a big deal for me. I am not going there to race Asafa but just to make the team," he said.

Mills only agreed to him running 100m after losing a wager last year.

"I told him if he broke the national 200m record he could run a 100," explained the coach, who is convinced that the future of a runner who stands at 6ft 5in lies in the 200m and 400m.

But Bolt was permitted to run his first 100m in Greece last September and he clocked 10.03, the fourth fastest time ever by a Jamaican.

His fifth race at the distance ended in a world record. He accepted that many doubt anyone can run faster than the likes of Ben Johnson unaided but seemed untroubled by the cynicism.

"I don't think about it too much. It doesn't matter to me what other athletes do so long as I stay clean," he said.

Certainly he does not mind running against them. Dwain Chambers spent more than a year after his two-year drug ban working out with Bolt in Mills' group, and the world record holder would run against him if asked.

"I don't have a problem. I shall do my best whoever is at the meeting," he said.

They might even get to meet in the Olympics.

On the eve of his first 100m in almost two years On Wednesday afternoon in Greece Chambers told the website insidethegames.com that he will start High Court action against the British Olympic Association's regarding his ban as soon as he returns to London.