The Aidan O'Brien-trained Churchill completed the Newmarket/Curragh Classic double with a comprehensive success in the Tattersalls Irish 2,000 Guineas.
The 4-9 favourite's stablemate Lancaster Bomber put the pace to the race in conditions eased considerably by substantial rain, with Thunder Snow tracking him.
Churchill had just one opponent behind him entering the final three furlongs but made rapid headway to challenge new leader Thunder Snow over a furlong out, and Ryan Moore kept him up to his work to triumph by two and a half lengths.< Gordon Lord Byron rolled back the years with a game performance from the front in the Weatherbys Ireland Greenlands Stakes.
Some of the gloss was lost from the contest by the withdrawal of Acapulco, but Tom Hogan's stable stalwart was still allowed to go off at 20-1 and he made a mockery of those odds, seeing off Only Mine by a length and a half.
The other Group Two on the card was the Lanwades Stud Stakes and it went the way of the admirable Creggs Pipes (3-1).
Declan McDonogh made his own running on Andy Slattery's mare and when she was challenged by Opal Tiara found another gear to stretch three and three-quarter lengths away.
Brother Bear made it two from two with a taking performance in the Cold Move Irish EBF Marble Hill Stakes.
Colm O'Donoghue went to the front in the centre of the track approaching the furlong pole on Jessie Harrington's 2-1 favourite and although he drifted left, he still proved three lengths too strong for Would Be King < Glamorous Approach wasn't beaten far by Zhukova in the Noblesse Stakes and showed her appreciation for Jim Bolger's decision to lower her sights by justifying 7-2 favouritism in the FBD Hotels & Resorts Faithlegg House Hotel Handicap.
The Bolger-trained Gasta (5-1) denied Now You're Talking and Churchill's sister Clemmie in the Equisoft Irish EBF Fillies Maiden, while 14-1 shot Rattling Jewel claimed the Hanlon Concrete Handicap.
