BRISBANE (Reuters) - Britain's Dwain Chambers won the 100 meters gold at the Goodwill Games Wednesday in 10.11 seconds, forcing American Tim Montgomery to accept second best again.
Montgomery, second behind Maurice Greene at the world championships, took silver in 10.27.
Shirvington and Ghana's Abdul Aziz Zakari were both timed at 10.30 but the Australian was given third.
``I don't know what to say. I'm just dumbstruck, I wasn't expecting to win, I just wanted to go out and have a laugh,'' Chambers said.
``I've been beaten a lot this year. This is just confidence for me, especially beating guys who were major medallists at the world championships.''
The 23-year-old Chambers finished fourth at last year's Sydney Olympics and this year's world championships and is only the second Briton after Linford Christie (news - web sites) to break the magical 10-second barrier. But he has never won a major senior title.
Mozambique's Maria Mutola won the women's 800 meters to add to her world and Olympic titles while world champion Allen Johnson lunged at the line to beat Cuban Olympic gold medallist Anier Garcia in the 110 meters hurdles.
``I started to fade pretty badly. My legs were like spaghetti,'' said American Johnson, who still plans to run at Sunday's IAAF Grand Prix finals in Melbourne. ``It was quite a tough and close race but I am ready for one more.''
Wednesday's 100 meters was delayed by two false starts but Chambers held his composure and made a lightning quick getaway.
He established an early lead then stretched out to win easily running into a slight headwind.
``I've got a title under my belt now, it's not a major championship like the Olympics or the worlds but it gives me peace of mind and I can push on for next year,'' he said.
Montgomery described his own performance as ``terrible.''
The American was one of the slowest to react to the starter's gun and never got into stride. ``It's really cold out here. The times are terrible. Everything was terrible,'' he said.