Kiwi stayer Red Shift is showing positive signs he's set for a big Australian debut in the Group Three Grand Prix Stakes at Doomben.

Darren Gauci will be hoping the predicted rain falls overnight as it will give him his best chance to land a winner since his comeback to race riding.

Anthony Cummings is confident the promising Magnier will hold his own at his first city start providing he handles the likely rain affected conditions.

Nathan Berry is hoping to make a winning return from a careless riding suspension with six rides at Rosehill.