Pat Smullen steered the Willie Mullins-trained Renneti to a clear-cut success in the Group Three Loughbrown Stakes at Naas.
The eight-year-old bolted up in a conditions race at the Galway Festival, but had since finished down the field in the Irish St Leger Trial and a valuable handicap at Leopardstown.
Back in a smaller field, he was the 4-5 favourite to get his season back on track and saw out the two-mile distance well to score by five lengths.
Stars Over The Sea was a clear second.
Mullins confirmed the Qipco British Champions Long Distance Cup could be Renneti's next port of call.
He said: "Hopefully at this time of year he will keep getting the ground he likes with plenty of dig in it.
"He'll probably stick to this sort of trip and he could go for the race in Ascot."
Mcmunigal made a successful debut for trainer Ger Lyons in the Irish Stallion Farms EBF Maiden.
A field of 15 unraced juveniles went to post for the seven-furlong contest, with Mcmunigal a 13-2 chance in the hands of title-chasing Colin Keane.
The gelded son of Epaulette tracked the pacesetters until early in the home straight and showed a smart change of gear to to assert in the final furlong.
The Aidan O'Brien-trained James Cook, a full-brother to Breeders' Cup Turf and Prix de l'Arc de Triomphe heroine Found, was a big eyecatcher in second, beaten four lengths.
James Cook's fellow 3-1 joint-favourite Loving A Boom raced on the pace before fading into third.
Lyons said: "He's a horse that came to me from the breeze-ups. He's had a winter coat all summer, hence we took our time. He was a rig so we operated and let him get over it.
"He wasn't coming in his coat and we chose this race a while ago. The coat didn't matter at this stage.
"What you have seen there is what he's been at home. Anything I've asked of him, he's done.
"He's very laid back and Colin said he floated through the ground. He's not ground-dependent and there should be huge improvement as he was green when he hit the front.
"I'm not sure if we will run him again this year. We could come back here for the Tetrarch next year, something like that, but we won't be in a rush with him."
Powersville claimed a narrow victory in the Foran Equine Irish EBF Auction Race.
The Tom Mullins-trained filly was turning out just four days after finishing sixth in a nursery at Fairyhouse and was a 16-1 shot under Niall McCullagh.
The Broghie Man led inside the last of six furlongs, but Powersville picked him off and had just enough in the tank to hold the fast-finishing Sunday Smart at bay by a head.
Lyons' Curragh maiden winner Would You Believe was the 7-4 favourite and was still in with every chance when appearing to lose his action. He was pulled up and dismounted by Keane.