Last year's Epsom Derby runner-up Cliffs Of Moher rediscovered the winning trail in the Coolmore Camelot Irish EBF Mooresbridge Stakes at Naas.
Aidan O'Brien's charge won the Dee Stakes at Chester a year ago, before finding only stablemate Wings Of Eagles too strong in the premier Classic the following month.
Cliffs Of Moher went on to finish fourth in both the Coral-Eclipse and the Juddmonte International, while he finished out of the places in the Irish Champion Stakes, the Champion Stakes and the Breeders' Cup Turf.
He was last of five on his return to action in last month's Alleged Stakes over this course and distance but having blown away the cobwebs, he was the 13-8 favourite for this 10-furlong Group Two.
With another Ballydoyle inmate in Yucatan and Ken Condon's stable stalwart Success Days slugging it out in front, Ryan Moore played his cards late aboard Cliffs Of Moher, swooping in the last 100 yards to get up and score by a length and three-quarters.
Success Days ran a fine race to finish second, just over three weeks after finishing last of 10 runners behind the mighty mare Winx in Australia.
O'Brien said afterwards: "He relaxed lovely and came home well.
"He has an option of either the Coronation Cup (Epsom) or the Tattersalls Gold Cup (Curragh). "He's a good horse and was just beaten in an Epsom Derby."