World recordholder Leisel Jones posted the fastest 100 metres breaststroke in the world this year at a grand prix meet in Brisbane.

The 18-year-old put the Lethal back into Leisel, clocking 1 minute, 7.13 seconds to power to the wall 0.74s ahead of Brooke Hanson - the woman who beat her at the Olympic swimming trials in Sydney four months ago.

"I'm quite shocked," Jones said after tonight's win.

"I didn't really push myself too hard. I took it pretty easy." Jones's ability under pressure has been under a cloud, despite stunning the international swimming community with a world record of 1:06.37 in Barcelona a year ago.

The Queenslander registered the world mark in a semi-final at the world championships last July, but had to settle for bronze in the final.

Her big race temperament was questioned again when Hanson beat her for the national title in March.

But some hard racing in Europe last month, when she won eight out of nine races during the Mare Nostrum series, seems to have the 2000 Olympic silver medallist back on track for the Athens Games.

Her mind is clearly focussed on lowering the world record again come the Olympics.

"I think you have to be up to that standard with the Americans," she said.

"If you want to be doing around a 1:06, you've got to be swimming 1:07 now in full training." Four nights of grand prix racing in Brisbane this week will be the Olympic swimming team's last competition ahead of the August Games.

Brought to you by AAP © 2024 AAP