That's exactly what he got as Mister Rea looks to extend his unbeaten record in the NSW Breeders Challenge two-year-old colts and geldings heat at Young on Tuesday.

After winning his first five starts, Mister Rea will start from the inside of the second row.

The Temora trainer is still confident he can overcome it to book his place in the semi-finals of the group one series.

"It was probably the only one I didn't want but it is what is it and we can't do much about it," Walker said.

"It will just test my driver but he should be right."

Walker will leave the race plan up to reinsman Daryll Perrot.

All he wants is to safely getting around the first turn.

"I'll just leave it to Daryll as he's been around long enough and knows what to do," Walker said.

"He just has to let them get around the first corner and then get into the race.

"That's about all you can do."

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Mister Rea resumed with another strong win at Riverina Paceway earlier this month.

Walker has been pleased by how he's come through the run but isn't focused on maintaining his unbeaten streak.

Instead he's confident the Bathurst Gold Crown winner is building in the right direction.

"He's going good so there are no worries there," Walker said.

"I would like to own the one that beats him as it would be fairly handy I can tell you."

Walker also lines up last-start winner Glenrock in the two-year-old fillies heat.

Also by Pet Rock, Glenrock has had a win and two seconds from her five starts to date.

She has drawn barrier four, but Walker knows group one winner Captains Queen will be very hard to beat despite drawing the outside of the front row.

"The filly is going good but Russell Jack's will just bolt in," Walker said.

"She will be there with the rest of them, and is a nice little filly.

"She isn't over-talented but is a nice handy filly and I'll be hoping she can run in the first four or five.

"I think a bit of her and she is a tough little thing and would probably be better if the races were over the longer distances but they don't have many of them these days."