Monday, August 18, 2008 - 11:02 PM

Australia's Sally McLellan has qualified for the final of the women's 100 metres hurdles at the Beijing Olympics.

The 21-year-old clocked 12.70 seconds to finish fourth in her semi-final behind favourite LoLo Jones of the United States (12.43).

Jones's time was the fastest in the world this year as she up another US-Jamaican athletics showdown in Tuesday's final.

One night after Jamaican women swept the 100m medals with three Americans behind them, Jones and compatriot Damu Cherry won their heats, Cherry taking her semi-final in 12.62, and Dawn Harper advanced just .04 behind.

"We're going to go for an American sweep, 1-2-3, and see what happens," said Cherry, who is fighting the flu.

"I'm going to execute my race and see what happens."

Jones - whose heritage is French, Norwegian, Native American and African-American - would not predict a US sweep.

"I never say clean sweeps because anyhthing can happen when you have 10 obstacles in front of you," Jones said.

"I'm not going to worry about other lanes, but I hope we have a great day for the USA tomorrow."

Jones, who won the world indoor 60m hurdles crown earlier this year, beat the prior 2008 best and personal best of 12.45 she set to win at the US Olympic trials in July.

"I don't remember the start too much," Jones said.

"I just got in the rhythm and everything clicked. I am happy with the time, but as soon as I leave the stadium I'm forgetting the result and focusing on tomorrow.

"I did the same thing in the US Olympic trials. I ran a personal best in the semi-final but still improved it for the final so this will not be a problem."

Jamaicans Delloreen Ennis-London, second at the 2005 worlds and third at last year's worlds, and Bridgitte Foster-Hylton advanced to the final but a fall for Sweden's Susanna Kallur ended hopes of another Jamaican sweep.

Neighboring Vonnette Dixon was thrown off stride when Kallur stumbled over the first hurdle. The Jamaican struck her fourth hurdle and finished fifth in 12.86, .02 behind Britain's Sarah Claxton for the last spot in the finals.View historical results of the women's 100m hurdles.