Seawhatyouthink, ridden by Dean Yendall, hung on to beat the Aaron Purcell-trained Constantinople by a head in the $130,000 contest over 2500 metres.

The lightly-raced five-year-old had won a restricted race at Geelong and the Mortlake Cup from five other starts for Williams.

"Seawhatyouthink is lightly-raced and that's the first time he's been out to 2500 metres," Williams said.

"I think he's still learning and should improve off that run. We may look at the Bagot Handicap on New Year's Day for his next start."

Yendall said Seawhatyouthink is still learning how to race in Australia.

"He's still learning this Australian caper - he's a tricky horse," Yendall said.

"We had a nice gallop, this bloke switches off but he wanted to lay in before I asked him to go so I had to pull the whip through into my left and give him a reminder and he galloped on good. My bloke had the will to win and has a massive gallop under him."

From his nine starts Seawhatyouthink has won four races.

Meanwhile, the powerful training combination of Ciaron Maher and David Eustace kept the winners rolling in on Saturday.

Maher and Eustace had a winning double at Flemington and a winner at Randwick. Lighthouse and Pioneer River won $130,000 restricted races at Flemington while El Padrino was successful in the $400,000 listed Inglis Nursery at Randwick.

Maher and Eustace purchased El Padrino for $210,000 at this year's Inglis Premier Yearling Sale in Melbourne.

El Padrino may have his next start in the $2 million Inglis Millennium at Randwick on February 5 before looking at the $5 million Golden Slipper at Rosehill on March 19.