Gordon Lord Byron made a dream start to his Australian stint when winning the Group One George Ryder Stakes at Rosehill.
Tom Hogan's six-year-old landed the Betfred Sprint Cup at Haydock last year and was last seen finishing fourth in the Hong Kong Mile back in December.
Despite those recent Group One exploits, he was sent off an 18-1 shot under Craig Williams in the seven-and-a-half-furlong heat but he came with a powerful run after being settled in the early stages.
He swept to the front inside the final half-furlong to edge out Speediness by a short neck with El Roca a further three-quarters of a length away in third.
The run was a warm up for next month's inaugural Championship meeting, with Hogan having the option of tackling either the Doncaster Mile or the six-furlong TJ Smith Stakes at Randwick on April 12.
Hogan said: "It was great - a good achievement. It was a bit unusual using a Group One as a prep for another race, but it worked out and he won it well.
"It give us options for next month and we will make a decision in the next few days about which race to go for. Craig said he could go for either.
"It's great to win though and to break new ground."