The irrepressible Jim Cassidy gave notice he was in for a big autumn carnival with a winning double for trainer John O'Shea at Warwick Farm.Group Two wins by Steps In Time in Saturday's Breeders Classic (1200m) and three-year-old Sea Siren in the Light Fingers Stakes (1200m) helped brighten the day for O'Shea who was in Melbourne where Foxwedge finished fourth to Black Caviar at Flemington.After Steps In Time took out the Breeders' Classic, Sea Siren stamped herself as a filly going places this

The irrepressible Jim Cassidy gave notice he was in for a big autumn carnival with a winning double for trainer John O'Shea at Warwick Farm.

Group Two wins by Steps In Time in Saturday's Breeders Classic (1200m) and three-year-old Sea Siren in the Light Fingers Stakes (1200m) helped brighten the day for O'Shea who was in Melbourne where Foxwedge finished fourth to Black Caviar at Flemington.

After Steps In Time took out the Breeders' Classic, Sea Siren stamped herself as a filly going places this autumn when she beat a quality field.

Group One winner Streama was sent out the $2.20 favourite and charged home late but Sea Siren ($14) had the momentum and held her off by a short neck.

Hallowell Belle ($13) was another half-length back third.

Making the win a significant one for Cassidy is the fact Sea Siren carries the pink and blue colours of Perth businessman Keith Biggs whose partners include Rod Russell.

"It means a lot to me," Cassidy said.

"Keith Biggs and Rod Russell have been supporters of mine for 25 years.

"I rode horses like Dignity Dancer and Paklani for them. They will be watching in Perth and the champagne will be out."

The race changed complexion shortly after the start with expected leader Karuta Queen ($5) missing the start and coming out behind the field.

Cassidy took the initiative and after leading early, gave Sea Siren a breather and let Schiffer take over.

Sea Siren took the lead again in the straight and held off Streama's charge from midfield.

"She is a very, very good filly," Cassidy said.

"We knew she had to be up in the first three and we thought she was up to them.

"The way she worked on Tuesday we came here very confident."

O'Shea's foreman Bryce Heyes echoed Cassidy's sentiments.

"She was dynamite when she worked on Tuesday," he said.

"It was a massive step in grade for her but we were very, very confident."

Streama's trainer Guy Walter was as pleased as he could be without winning.

"She ran well, it was a good effort," he said.

It was not so good for Neville Layt who will take Karuta Queen home to Queanbeyan for a break.

The filly missed the start in the Rubiton Stakes last week when Here De Angels played up in the stall next to her but had every chance to jump at Warwick Farm.

"She just raced flat and that's not like her," Layt said.

"We'll give her three or four weeks off and freshen her up."

Cassidy was also at his best on Steps In Time, controlling the race to score a campaign-defining win on the mare who will now be aimed at next month's Group One Coolmore Classic.