Gingernuts has become the fourth New Zealand-trained horse in seven years to win the A$600,000 group one Rosehill Guineas.
The New Zealand Derby winner made his Australian debut in Saturday's 2000m race for three-year-olds at Rosehill and upstaged the locals in the heavy conditions.
Gingernuts ($6.50) defeated favourite Inference ($3) by 2 lengths, joining Jimmy Choux (2011), It's A Dundeel (2013) and Volkstok'n'barrell (2015) as recent New Zealand-trained winners of the race.
The Stephen Autridge and Jamie Richards-trained gelding needs to be a late entry for the Australian Derby but Richards confirmed the intention to run in the 2400m classic at Randwick in two weeks, with Gingernuts now $4.60 favourite.
"He's going to be awfully hard to beat in a couple of weeks' time," Richards said. He felt Gingernuts had kept improving since the NZ Derby (2400m) and the drop in distance to 2000m on Saturday was countered by the testing conditions.