An upbeat report from jockey James McDonald has convinced trainer Bruce Wallace to throw New Zealand stakes winner Fast Dragon in the deep end at Rosehill on Saturday.

Wallace had the colt entered for a barrier trial on Friday but decided on the San Domenico Stakes (1100m) as a starting point on McDonald's advice.

His early Sydney performances will determine the spring path for Fast Dragon who broke his maiden at his third start in the Listed Champagne Stakes (1600m) at Ellerslie in April.

"James rode him last Saturday and he was pretty happy with him," Wallace said.

"He needs to start somewhere. He's entered for the Golden Rose and the Caulfield Guineas but he has some staying potential so he could head to the longer races like the Spring Champion Stakes.

"We'll see how he goes in the shorter races. He will probably find these horses too fast but if he can figure in the top four, we can get a line on where we go with him.

"And he might as well race for prize money than go round in a trial for nothing."

Golden Slipper runner-up Sidestep has 58.5kg topweight in the San Domenico with his Peter Snowden-trained stablemate Kuroshio on 58kg.

Fast Dragon has 57.5kg along with Never Can Tell and Whittington.

Never Can Tell, one of two runners for Anthony Cummings, beat the Gai Waterhouse-trained Whittington to win the Canonbury Stakes in February.

The Auckland-based Wallace trains Fast Dragon for Hong Kong businessman and long time client Peter Chu who also races horses under the Able International banner.

Although Wallace has trained many horses in preparation for Hong Kong careers, Fast Dragon is one Chu is happy to keep in the southern hemisphere.

"Peter is a great owner to have and he is happy to let us see if we can make a stallion proposition out of Fast Dragon," Wallace said.

"I have thought from day one he can measure up. He's still learning and he's a big horse but I think he should sprint well."