Aidan O'Brien has enjoyed plenty of success across the Irish Sea this week and Battle Of Marengo attempts to put himself at the top of the Ballydoyle Epsom contenders in the Derrinstown Stud Derby Trial at Leopardstown on Sunday.

The Galileo colt signed off his juvenile campaign with victory in the Beresford Stakes and picked up where he left off, defying his Group Two penalty at the expense of subsequent Sandown winner Sugar Boy in the Ballysax.

He now crosses swords with Jim Bolger's unbeaten Group One winner Loch Garman, as well as Futurity hero First Cornerstone, with Dont Bother Me and Little White Cloud rounding out the field.

There are further Classic clues on offer in the Derrinstown Stud 1,000 Guineas Trial and Rawaaq tries to repeat last month's success, stepping up from seven furlongs.

Standing in her way is We'll Go Walking, who lost little in defeat against the year-older Caponata at Gowran Park but may need further than this mile.

Ralston Road was second to We'll Go Walking at the start of April and that form sets the standard in the FM104 Strawberry Alarm Clock Family Days Maiden, while Shadow Eile reverts to the level for the Horse Racing Ireland Pensioners Handicap on the back of a Grade One second at the Punchestown Festival.

Duntle hasn't been seen in public since losing the Matron Stakes in the stewards' room, but David Wachman has spotted a nice point of return for her in the Amethyst Stakes.

She has four rivals to beat, including Bold Thady Quill, who had the re opposing Sweet Lightning a couple of places behind when chasing home Declaration Of War in the Heritage Stakes.

Heart Focus and Ealain Aibrean both hit the crossbar on their racecourse introductions and lock horns in the Irish Stallion Farms EBF Auction Maiden, which starts the fixture off at 2.25pm.