Emerging star That's The One has dented the Australian Guineas prospects of favourite Helmet with an upset win at Flemington.Helmet ($1.65) was dominant in Saturday's Group Three CS Hayes Stakes market but found wanting when finishing fourth after hugging the rail throughout the event while That's The One ($7.50), ridden by Craig Williams, powered to the line to score.Settling eighth in the run, That's The One was always keen to go faster with a bounding galloping style out wide and, as has been

Emerging star That's The One has dented the Australian Guineas prospects of favourite Helmet with an upset win at Flemington.

Helmet ($1.65) was dominant in Saturday's Group Three CS Hayes Stakes market but found wanting when finishing fourth after hugging the rail throughout the event while That's The One ($7.50), ridden by Craig Williams, powered to the line to score.

Settling eighth in the run, That's The One was always keen to go faster with a bounding galloping style out wide and, as has been customary, cornered awkwardly but when let down by Williams in the straight was far too good.

He scored by a length from pacemaker Decircles while Instinction and High Recommended couldn't be split for third place.

Cindy Alderson and her father Colin who co-trains That's The One made a successful gear change of a tongue tie and winkers on the gelding who has now won three of his five starts.

"That was a really strong effort," Cindy Alderson said.

"He has always had the talent.

"He's had a few issues with his temperament but he's started to come right.

"When I walked into the track today he looked really on his game and maybe this is his time.

"Craig was fairly aggressive on him but he knew he had the horse underneath him.

"He was fit enough and he took it to them and hung on well in the end."

Alderson said Flemington was the best track for That's The One as it allowed him to balance up and stretch out in the straight.

"He is really big, long strider," Alderson said.

She said Helmet probably wasn't suited first-up and expected the Caulfield Guineas winner to be the one to beat in the Australian Guineas (1600m) at Flemington on March 3.

Williams said That's The One, who last start finished second to VRC Oaks winner Mosheen at Caulfield, was "a much more finer product today".

"The way the race was run just shows how solid the horse can be," Williams said.

"He still did a bit wrong on the turn so he still has a little bit of racing experience to come out of today."

Helmet remains the dominant Australian Guineas favourite at $2.70 ahead of That's The One and Vanity Stakes runner-up Mosheen who are both $7.