Oughton has lowered the colours of short-priced favourite Port Louis at Sandown.

After winning on a bog track at Cranbourne, Chartres will face a firmer track in the Sandown Guineas.

Port Louis is one of the better performed maidens in Australia and he will attempt to break through in the Group 2 Sandown Guineas.

Port Louis and Growl will run in the Blue Sapphire Stakes for trainers Ciaron Maher and David Eustace.

Hugh Bowman is chasing his 100th Group 1 win when he rides Port Louis in the J J Atkins at Eagle Farm.