< Power bounced back to his best form after a disappointing run at Newmarket to land the Abu Dhabi Irish 2000 Guineas at the Curragh for the Aidan O'Brien team.
Nearly last in the English Guineas, the three-year-old (5-1) enjoyed the quicker ground as he travelled in mid-division under Joseph O'Brien behind a brisk pace set by his stablemates Daddy Long Legs and Wrote
Daddy Long Legs built an eyecatching advantage, but Power producing a smart turn of foot to cut him down, and had a length to spare over outsider Foxtrot Romeo at the line, with Reply taking third for the Ballydoyle yard.
Dermot Weld's Group One-winning mare Emulous put up an impressive performance to open her campaign with victory in the TRI Equestrian Stakes.
Pat Smullen eased her out to challenge inside the final quarter-mile and no sooner had One Spirit hit the front than the 4-5 favourite sprinted past and put the race to bed, winning by a length and three-quarters.
It was a second Group Three success for Smullen, who was also on board when Tiddliwinks continued the dominance of British raiders in recent runnings of the Weatherbys Ireland Greenlands Stakes.
The jockey swooped from behind on Kevin Ryan's 8-1 shot, a surprise winner of the Duke Of York Stakes last time, and resisted the renewed challenge of early leader Jimmy Styles to score by half a length.
Mick Channon's raider Cay Verde (5-2) was always in the front rank in the Emirates Equestrian EBF Marble Hill Stakes and asserted a furlong out to win a shade cosily by three-quarters of a length under Richard Hughes.
Jim Bolger missed out on the big race when Parish Hall was a late absentee but he landed a double with Kevin Manning thanks to Glor Na Mara (9-1) in the Emirates Equestrian Federation Handicap and Aquilonius (16-1) in the ITBA Supporting Irish Breeders Handicap.
Patrick Prendergast's newcomer Nandiga (25-1) looked outpaced in the Saadiyat EBF Fillies Maiden but responded well to pressure from Chris Hayes to edge out Ballydoyle contender Delight by a neck.
