The Sagitta 2000 and 1000 Guineas at Newmarket two weeks ago provide the biggest clues to the Irish equivalents at the Curragh next weekend.
Although King's Best, winner of the colts' classic at headquarters, goes instead for the Vodafone Derby, several of those who finished behind him will be seeking compensation in the #200,000-added Entenmann's Irish 2000 Guineas on Saturday.
They are headed by Aidan O'Brien's number one contender Giant's Causeway. He looked like taking the Newmarket honours until King's Best swooped to gain a three-and-a-half-length verdict.
However, he was clear second best and will be a warm order to give the Ballydoyle trainer his third victory in the Curragh Classic in the last four years following Desert King (1997) and Saffron Walden (1999).
The Storm Cat colt had beaten his elders over the straight seven furlongs at the Curragh on his seasonal debut and looks the one to beat.
Barathea Guest would be certain to give him a race as he stayed on well take third place in the 2000 Guineas, just one and a half lengths behind Giant's Causeway.
The Curragh mile would suit George Margarson's charge as would cut in the grounds.
However, he would have to be supplemented on Tuesday for IR#25,000 and connections are leaving the decision until the last minute as they are considering waiting for the Vodafone Derby in three weeks.
"I believe that on softer ground he would have won the Guineas at Newmarket and I have no fear of taking on the runner-up Giant's Causeway again," said Margarson.
David Elsworth is likely to send his 2000 Guineas failure Scarteen Fox on a recovery mission to the Curragh.
Elsworth blamed the draw for Scarteen Fox, who was only 19th of 26 behind King's Best: "The Newmarket race was unsatisfactory as we were drawn 26 and could never get a good position."
Lahan, winner of the Newmarket fillies' Classic, bids for the double in the Entenmann's Irish 1000 Guineas.
"She has got so much speed that there really isn't any need to go much beyond a mile at present and she won't run in the Oaks," said owner Hamdan Al Maktoum's racing manager Angus Gold.
"The Coronation Stakes looks a sensible option but we could take in the Irish 1000 Guineas on the way," added Gold of the John Gosden-trained filly.
Princess Ellen, 66-1 runner-up to Lahan at Newmarket beaten a length and a quarter, is out to prove that run was no fluke.
Her trainer Gerard Butler at the time said: "This wasn't a surprise. She'd been doing very well at home but the other filly got first run on her today and you can't do that in Group One races.
"She was running all the way to the line and will now head to Ireland. Easier ground would be a help to her as well.
"She's improved a lot since Newmarket and she goes to Ireland with a definite chance."
And Mick Channon is eyeing the Curragh for Seazun following the filly's fourth place behind Lahan, beaten just under five lengths by the winner.
Channon said: "The Newmarket race could have gone better for us but you've got to play the cards you're dealt and get on with it.
"Obviously I've got to speak with the owners but I'd have thought we'll stick to the plan and go to Ireland."
Amethyst was a disappointing eighth, but O'Brien's filly was found to be heavily in season and Michel Kinane was not hard on the full-sister to 1998 2000 Guineas winner King Of Kings once he realised something was wrong.
She had gone to England with every chance following her easy win at Leopardstown last month.
However, the pick of the Irish contingent could be Michael Grassick's Preseli, who maintained her 100 per cent record in the Derrinstown Stud 1000 Guineas Trial at Leopardstown a week ago.
The Caerleon filly held Storm Dream by a short head despite being burdened with a 7lb penalty for her victory in the Group One Moyglare Stud Stakes at the Curragh last September when Amethyst was beaten a total of two and a half lengths in fourth place.
Grassick was pleased to have got a race into her and expects her to improve.
"The race didn't really work out the way she would have liked it, but she won. She was fit for the race, but I think the two weeks from this race to the Irish 1000 will bring her on," he said.
Theoretically, who was two lengths further back in third at Leopardstown, probably needed the run more than her rivals as she had been held up in her work.
She would be no back number should Dermot Weld allow the Theatrical filly to take her chance.
Newmarket Guineas form is usually sound so it may pay to stick with Giant's Causeway and Lahan in the Irish Classics.
