Dwain Chambers bulleted to a brilliant 100m win over the cream of British sprinting at the Norwich Union World Trials/AAAs in Birmingham.

Chambers clocked a sensational 10.01secs, the fastest time ever by a British athlete in Britain, with World Junior champion Mark Lewis-Francis second in 10.12secs.

But European champion Darren Campbell, struggling with a hamstring injury, could only finish sixth - and his chances of making the World Championships in Edmonton next month now hang in the balance.

With the first two to cross the line automatically picked for the British team, Campbell must now hope the selectors grant him the one discretionary place.

But with close friend Christian Malcolm coming home third in 10.21secs, and with only seven days to prove his fitness, Campbell will fear the worst.

Chambers was delighted with his victory.

"I know I could have gone under 10 seconds if I hadn't eased off," he said afterwards.

"I am very consistent in the 10.00s this year, and that bodes well for the Worlds.

In her first competition of the year, just weeks after her ex-boyfriend was jailed for his part in a bogus race-hate attack, Hansen jumped 14.09m.

"I knew there was a good jump in me because I feel good in myself," said Hansen.

"It feels like 1999 again," she added, refering to the season when she became world indoor champion and broke the indoor world record.

Kelly Holmes continued her comeback from injury with a fine win in the women's 800m despite only deciding to compete moments before the gun.

"I nearly didn't compete," she said.

"I had doubts in myself and tossed a coin to see if I was going to run. It landed on not running and I was going to pull out.

"Then about two minutes before call-up time I decided I was going to run. This has given me confidence I can get through rounds, which is what I'll need to do in a month's time."

Janine Whitlock broke her own British record in taking the pole vault with 4.40m - and also won a new Rover 25 GTi, the prize for any athlete breaking the previous British best.

It was the 33rd time she has broken the national record outdoors and indoors.

Ben Challenger retained his high jump title with victory over Dalton Grant and insisted her could still make the qualifying standard for the Worlds.

The 23-year-old Belgrave Harrier cleared 2.17m at the Alexander Stadium but then watched with heart in mouth as Grant's final attempt at 2.22m left the bar wobbling for an age before it fell.

"Now that I have won I just need to chase some heights so I can get out to the Worlds," said Challenger.

"I don't think I will have a problem getting the height. Today the wind was terrible.

"I have still got two attempts to qualify. I've done it before and I'll do it again."

There was drama in the women's 100m when Sarah Wilhemy pipped Amanda Forrester and Joice Maduaka by just 0.01 seconds. Wilhemy clocked 11.41secs to take the title by the narrowest of margins.

Tony Jarrett took his first AAAs win in the men's 110m hurdles while Mick Jones captured his fourth AAA hammer title.Jones' throw of 74.40m was well short of the Edmonton qualifying mark of 77.65m - but the veteran still has a lifeline left.

Having achieved 76.43m, which just betters the 'B' qualifying standard, the selectors can enter Jones for Edmonton should no other Briton better that mark.