Irish Derby second Galileo Rock may have taken up his Doncaster engagement, but the GAIN Irish St. Leger at the Curragh is still a high-class affair.

Last year's winner Royal Diamond edged out Voleuse De Coeurs and Ernest Hemingway in the trial so is evidently in form, but Pat Smullen has opted to ride the unexposed Pale Mimosa instead of Voleuse De Coeurs.

Dermot Weld's filly outgunned Missunited to land the Saval Beg at Leopardstown and the runner-up has since gone on to Galway Hurdle and Listed Flat wins, so the form is solid.

Throw Godolphin's Ahzeemah and John Oxx's Saddler's Rock into the mix, and a cracking race is in store.

Sudirman bids to secure a second Group One success in the Goffs Vincent O'Brien National Stakes.

David Wachman's charge took three races to get off the mark, but has since landed the Railway and Phoenix Stakes.

Richard Hannon's unbeaten British raider Toormore is the pick of the opposition, though Aidan O'Brien's trio of Friendship, Giovanni Boldini and Wilshire Boulevard should not be ignored.

The master of Ballydoyle also unleashes Darwin again in the Manguard Plus Solonaway Stakes.

The US import looked a star in the making when beating Gordon Lord Byron at this track in July and considering the runner-up's easy Group One win since, it is hard to pick holes in the form.

The meeting gets under way at 1.45pm with the Gain Supporting Irish Horse Welfare Trust EBF Maiden, with O'Brien going to war with Guerre.

The US-bred colt has a plethora of fellow newcomers to contend with, not least Meihua and Right First, but one with experience to her name who could improve is Mick Halford's course fourth Zaindera.

Dazzling made a favourable impression on her debut at this track and bids for some black type in the Listed Flame Of Tara EBF Stakes, where Beyond Intensity and Princess Aloof look the biggest dangers.