"Keano!" isn't a war-cry usually associated with the RDS, but the Ballsbridge arena was ringing to it on Saturday when Cian O'Connor, showjumping's new Ciano, cleared 7ft 4.5in to claim the Kerrygold Puissance outright and put himself on a pedestal nearly as high as the red and white wall he'd just cleared.
Even more spectacularly, it was only O'Connor's third Puissance and the first time his horse, Irish Independent Casper, had ever been asked to take on the big wall.
O'Connor - and the hugely partisan crowd whooping on their new hero - had hoped that the talented grey would make it a double by scooping yesterday's €96,000 Kerrygold Grand Prix as well.
But although Casper was one of seven horses through to the timed decider, his herculean efforts of the day before told against him and, with two down, he slid to fifth behind Dutch winner Marc Houtzager.
The Irish had continued in winning form yesterday, with Peter Charles, a notable absentee in the winner's enclosure until then, slicing off the skinniest of margins - .03 of a second - to snatch the lunchtime Kerrygold Speed Championship from Lieut David O'Brien's Speed Derby winner Lismore Clover.
But O'Brien had bigger fish to fry later in the day, with the Grand Prix as his main goal. Twelve months ago, the Army rider had crashed out of contention with a sickening mid-combination fall on Boherdeal Clover.
O'Brien was pitched clear, but the stallion was removed from the arena in a horse ambulance.
Thankfully the injury was not as severe as it had seemed, and two months on the easy list put Pauric Goonan's horse back to rights.
His return to form was proved emphatically yesterday as the 11-year-old produced a sensational clear that guaranteed his chance against the clock.
He was joined by six others and, as pathfinder, had the unenviable task of setting a target that would unnerve the opposition.
Another fabulous clear, with a real flyer to the final Kerrygold upright, stopped the clock on 46.65 seconds, but it wasn't quite fast enough to stay out in front.
Belgium's Philippe Lejeune and the Quidam de Revel stallion Nabab de Reve cut off a further 0.81 to take the lead, before Cian O'Connor came in front of his adoring fans to challenge for more glory.
As godson of Sir Anthony O'Reilly, O'Connor is a natural headliner, but Saturday's exertions over the wall told on Irish Independent Casper and he faulted twice, but fifth place was still good enough for O'Connor to clinch both the leading international and national rider awards.
Last man in, Marc Houtzager, had nothing to lose by going for it and go for it he did, scooting round on the 11-year-old Ramiro Z stallion HBC Jacomar to come down to the last with time to spare.