It was Magic Beans' first start since November in the Priceline Pharmacy Two Year Old (1300m) and the trial helped round out his fitness.
Magic Beans ($.950) was the strongest on the line beating favourite Raay Of Dreams ($2.05) with a half head to Sizzling Babe ($5.50) third.
Zielke was in Mackay on Saturday with two runners but he intends to look for even longer two-year-old races with Magic Beans.
“John has stuck by me of late and we have been having a bit of success,” he said.
“One thing, you don't get many two-year-old races run as slowly in the early stages as that. But my horse was strong on the line.”
Andrew Gibbons said of his ride on Raay Of Dreams she had probably not been suited by the slow early pace but had fought back well in the straight.