The Gai Waterhouse show continued its autumn carnival run at Randwick when Arlington Road gave the trainer yet another Group One when he stole the All-Aged Stakes (1600m) courtesy of a great tactical ride by Jim Cassidy.

For owner Yvonne Smith, the win capped a great half-hour with Chainsaw Charlie winning at Kembla and Restless taking out the Group Three Doomben Carnival Cup in Brisbane.

Arlington Road has had a few problems on the way to the victory and was having his second start this preparation after running third over 1200m at Rosehill a fortnight ago.

The All-Aged was without star gallopers Lonhro and Defier, prompting Waterhouse to set her four-year-old for the race.

"When this race fell apart I really thought he had a chance," Waterhouse said.

"I've been virtually using him as a hack and a lead pony around the stable to get him fit enough.

"He's a really lovely-natured horse and deserves this Group One."

Cassidy took Arlington Road straight to the front with noted frontrunners Dash For Cash and Lord Essex tucked in behind and that's how they finished.

Arlington Road held on by a short neck over Dash For Cash with 1-1/2 lengths to Lord Essex.

Grand campaigner Shogun Lodge failed to show his usual dash at the finish and was seventh, 3-1/2 lengths from the winner who will now head to the Brisbane winter carnival.

"I haven't decided yet whether he will be set for the Doomben Cup or the Stradbroke but he'll definitely go to Queensland," Waterhouse said.

Dash For Cash, who racked up his fourth consecutive Group One second this autumn, will head to Victoria's Collingrove Stud with trainer Rick Hore-Lacy philosophical about the one that got away.

"He's a very game horse and ran well but it's pretty hard to get past Gai in Sydney," Hore-Lacy said.

"He's run his last race and goes to Collingrove Stud now with two Group One wins and a great record.

"I rate him up there with the best horses I've had and he ran against the best throughout his career."

Jockey Patrick Payne said Shogun Lodge was a little disappointing.

"He travelled well in the race and looked as if he was coming into the finish," he said.

"But he didn't let down like I expected. I don't think he's going as well as he used to."

Cassidy said Arlington Road on the other hand was always in command.

"You know Gai's horses have the necessary grounding and he just showed plenty," Cassidy said.

"He really dug deep when it counted."

Story by AAP (Carol Williamson)