The trainer of the best credentialled eastern states horse in the last Australian Group One race of the year is counting on his jockey being the difference at Ascot.

Wall Street, a fixture in a Group One races in Australia and New Zealand for almost three years, will have to overcome a wide barrier in the $500,00 Kingston Town Classic (1800m).

But trainer Mike Moroney is banking on Melbourne jockey Steven Arnold to help end a long losing streak for the rising nine-year-old.

Wall Street has drawn barrier 13 as he tries for his first win for Moroney and his first since claiming the 2010 Emirates Stakes at Flemington.

Arnold rode Wall Street for the first time when the galloper was beaten less than two lengths in this year's Emirates and Moroney says he the heavyweight rider is just the man for Saturday's contract.

"It's going to be tricky but in saying that I think we've got the right rider on him," Moroney told Sky Sports Radio.

"If there is anyone in Australia who can navigate the right passage from that draw I think Steve is certainly up amongst the best at doing that."

Moroney counted Wall Street an unlucky runner when midfield in the $1 million Railway Stakes a fortnight ago.

"He was set to finish a lot closer until he copped plenty of interference late," the trans Tasman trainer said.

Wall Street is a $15 chance in latest Railway markets with Luckygray, the obvious hardluck tale out of the Railway, holding a firm grip on favouritism at $2.50.

Playing God, shooting for a hat-trick of Kingston Town wins, is the $6 second favourite with Mr Moet, who landed a long-priced betting move to win the Railway, a $14 chance.

The only other visitor, the John Thompson-trained Shamardashing, is one of the outsiders at $61.