Derby and Oaks form will be put to the test at the Curragh on Saturday as Tuesday and Westover engage in a mouthwatering clash for the Dubai Duty Free Irish Derby.

Aidan O'Brien’s Tuesday bids to become first filly to beat the boys in Ireland’s premier Classic since Balanchine in 1994.

Still a maiden in the winter, Tuesday got off the mark at Naas in March before being placed in both the 1000 Guineas at Newmarket and the Irish equivalent at the Curragh.

Having successfully stepped up in trip when getting the better of Emily Upjohn in the Oaks at Epsom three weeks ago, Tuesday now bids to provide O’Brien with a 15th Irish Derby success.

"She hasn’t done an awful lot since Epsom, but we’ve been happy with everything she has done," O’Brien said. "We were delighted with her at Epsom."

When asked about the forecast rain over the weekend, he added: "She should be fine, she has run with an ease in the ground before so we don’t think it will be an issue."

Earlier in the week a lot of column inches were taken up by the decision of owners Juddmonte to replace Rob Hornby, who had ridden the Ralph Beckett-trained Westover to finish third in the Derby, with Irish champion jockey Colin Keane.

Unsurprisingly, while sympathising with Hornby, Keane was delighted to get the mount.

"I’m very thankful to Juddmonte for putting me up. It’s obviously unfortunate for Rob Hornby, but it’s a brilliant spare ride to pick up," he said.

"When you look back at the replay (of Epsom), he was the horse that caught your eye the way he finished, and usually the Epsom form holds up in the Curragh. A more galloping track might suit him.

"He looks like a very straightforward horse and I’m very much looking forward to him."

Barry Mahon, Juddmonte’s general manager of Ireland and European racing, said: "In fairness he was very unlucky at Epsom. He drew stall two and I don’t think that stall has produced a Derby winner since they started using stalls."

Joseph O’Brien’s Hannibal Barca would not be without claims given he won the Gallinule Stakes on his first outing since leaving Brian Meehan.

"Hannibal Barca has trained really well and he’s entitled to have a go at the race. It looks like it will be a proper race and we are looking forward to it," said O’Brien.

David Menuisier is hoping the forecast rain arrives for Lionel, a Listed winner at Goodwood last time out.

"He’s absolutely grand, we’ve been pleased with the way he’s strengthened since Goodwood. All the lights are green, we have our fingers crossed for a good run," said Menuisier.

Watch the Dubai Duty Free Irish Derby on Saturday on RTÉ2 and RTÉ Player from 1.55pm, with coverage on Sunday including the Alwasmiyah Pretty Polly Stakes on RTÉ One and RTÉ Player from 2.10pm