Paul Cave watched the AJC Australian Derby last month and got very excited.High Chaparral had just sired the trifecta, and Cave knew he had a promising staying prospect by the same stallion at home at his Warwick Farm stables.Straight away he phoned long-time client John Watters, the man who went to the yearling sales in New Zealand a couple of years ago with Cave intent on coming back with a couple of horses by the sire.One of them was Our Billy Blue."He's the most exciting horse in my stable a

Paul Cave watched the AJC Australian Derby last month and got very excited.

High Chaparral had just sired the trifecta, and Cave knew he had a promising staying prospect by the same stallion at home at his Warwick Farm stables.

Straight away he phoned long-time client John Watters, the man who went to the yearling sales in New Zealand a couple of years ago with Cave intent on coming back with a couple of horses by the sire.

One of them was Our Billy Blue.

"He's the most exciting horse in my stable at the moment," Cave said.

"He's one of those horses that gallops effortlessly."

On Saturday Our Billy Blue will have his fourth career start in the John R Turk Handicap (2000m) at Randwick, with a Group One Queensland Derby tilt on the table if his performance warrants it.

Cave doesn't doubt the three-year-old's ability but he's concerned the gelding's immaturity could stop him from taking him north this preparation.

"I would like to (go to the Derby) but he'd have to turn around completely in his attitude," Cave said.

"I think next campaign he's going to be a much better horse.

"He's still very green. I've travelled successfully over the years and you want a horse right on top, not a horse that's a bit green.

"If he ran a blinder on Saturday and puts it all together then I would head that way, otherwise he may just stay here for a couple more."

Our Billy Blue's only previous start at Randwick was in the Group Three South Pacific Classic (1400m) on April 17.

Star Of Octagonal won that race and went on to claim the $740,000 Inglis Guineas by 2-1/2 lengths at Scone on Friday.

The runner-up was Neeson, a brilliant winner of the Listed Hawkesbury Guineas at his next start.

Our Billy Blue showed his greenness by hanging in during the race and finished ninth.

"He spotted the big crowd and had a heart attack," Cave said.

The trainer took him to Newcastle for his next start on May 1 and the three-year-old raced to a 2-1/2 length win in a Benchmark-65 Handicap over 1500m.

He is the early favourite for Saturday's 2000m race, with a number of the small field in line for Queensland campaigns later on including the Roger James pair of The Terminator and Kings Deep.

Cave said he was looking forward to seeing what Our Billy Blue could do stepping up to the 2000m.

"I've had some decent staying horses in the past like Pasta Express, Lahar and Respect and I think this horse is above average," he said.

"The penny hasn't dropped yet, when it does I think we'll see a pretty smart horse."