Australia will face a maximum of 11 rivals when taking to the track once again in Saturday's Qipco Irish Champion Stakes.
Bookmakers rate The Grey Gatsby as the dual Derby winner’s most serious challenger, but Kevin Ryan’s British raider has already finished behind the Aidan O’Brien-trained favourite twice this season.
Jane Cecil's Noble Mission, winner of the Tattersalls Gold Cup, remains in the field after having had a break following his busy spring and early-summer campaign.
Mukhadram, who finished fourth behind Australia and The Grey Gatsby in last month's Juddmonte International at York could reoppose in the Leopardstown Group One contest.
Roger Charlton's back-to-form Al Kazeem, who was second to The Fugue 12 months ago, remains among the contenders.
O'Brien's international raiders Adelaide and Magician are currently still engaged in the race, along with stablemates Kingfisher and Hall Of Mirrors.
Jim Bolger's pair Parish Hall and Trading Leather, plus the Dermot Weld-trained Alkasser, complete the possible line-up.
