Cristoforo Colombo's Classic season delivered disappointingly little but Aidan O'Brien perseveres with him and he begins his four-year-old campaign in the Big Bad Bob Gladness Stakes at the Curragh.

This time last year, the son of  Henrythenavigator was the chief Ballydoyle hope for the 2000 Guineas, but he only managed fifth at Newmarket and, a Dundalk win aside, he struggled thereafter.

This looks an ideal point for him to regain some confidence, although Wannabe Better has fitness on her side after her recent Park Express defeat and both Sruthan and last year's winner Custom Cut need to be taken seriously.

Alive Alive Oh bids to get her career back on track in the Listed Irish Field Alleged Stakes.

Tommy Stack's filly appeared to have the world at her feet when running away with the Salsabil Stakes at Navan, but was only seen once afterwards when flopping in the Blandford Stakes.

In opposition is last year's winner Parish Hall, Irish Lincolnshire hero Stuccodor and John Oxx's unexposed filly Tarana.

O'Brien started Ruler Of The World off in the Irish Stallion Farms EBF Maiden 12 months ago, but this year's representative Adjusted has the benefit of previous experience and he was a place ahead of the reopposing Marakoush when second on his Leopardstown comeback.

Beyond Brilliance chased home the exciting Vote Often at Naas when last seen and is another big chance for O'Brien in the Irish Stallion Farms EBF Fillies Maiden, while the Andrew Slattery-trained Lupie is the only one with a run under his belt in the opening Irish Stallion Farms EBF Maiden (2.15), although his Dundalk third doesn't exactly set the bar high.

Thomas Edison made little impact in the County Hurdle, but this 135-rated jumper has a Flat figure of just 76 and Tony Martin is probably wise to try and capitalise in the War Horse At The Curragh Raceday Handicap.