Diamond Necklace lost her unbeaten record when finding the older mare Aventure too good in Sunday’s Group One feature at Deauville.Aidan O’Brien’s dual-Classic heroine, and four-time Group One winner, started a 2-9 favourite for the Sumbe Prix Jean & Louis Romanet but ultimately came up two lengths short of the local winner.The final Group One of the Deauville summer season was run on testing ground conditions, although O’Brien was reluctant to use that as an excuse for Diamond Necklace being beaten on her seventh career start.“She ran a good race and the winner was stronger than her on the day. We were very happy with her coming into this and the ground is no excuse. We’ll take her home and see how she is,” he reported. Aventure, runner up to Bluestocking the 2024 Arc, won last season’s Prix Vermeille and is a general 20-1 for another crack at the Arc in October.It was a frustrating Sunday for O’Brien who also had to settle for second in Deauville’s other top-flight contest, the Prix Morny.O’Brien’s number one hope Man’s Best Friend could never land a blow and eventually finished fourth, but Derby winning jockey Ronan Whelan briefly looked like he’d slipped the field on Ballydoyle’s 150-1 pacemaker Carry The Flag only to be ultimately reeled in by the filly Senorita Bonita.Oisín Murphy rode the winner who is on course for a mouthwatering clash with Sun Goddess and Libertango in Newmarket’s Cheveley Park Stakes.“We’ll head to the Cheveley Park and we’ll face Sun Goddess and Libertango, and it will be one of the highlights of the autumn season, the winner’s trainer Simon Crisford said.“Physically she doesn’t look like a stayer but she’s out of a Ruler Of The World mare. We’ll definitely try her over a mile next year.”Whelan’s pacemaking role was under the spotlight at York with contrasting spins aboard Action in the Juddmonte International and Sugar Island’s tearaway Yorkshire Oaks effort.The jockey’s effort in Saturday’s Group Two Futurity at the Curragh came under official scrutiny after stewards examined Whelan’s riding of Florida Bay – a half-length runner-up to stable companion Giant Sequoia – in the final 50 yards of the race.Jockey Ronan Whelan picked up a one-day ban at the Curragh on Saturday. Photograph: Warren Little/Getty Images Whelan appeared to ease up close home, but he told the inquiry that Florid Bay had made “an abnormal respiratory noise close to the line.” The colt was reported post-race normal by the Irish Horseracing Regulatory Board vet.The stewards noted explanations and took no further action but suspended Whelan for a day since he’d failed to report anything thing which might have affected the running of his mount.There was Irish success at Deauville on Sunday where Joseph O’Brien’s progressive stayer Defiantly made light of the step up to Group Two company to land the Prix Kergorlay.The almost two-mile contest is a traditional stepping stone to the Melbourne Cup and O’Brien commented: “This is a good trial for the Melbourne Cup so we said we might as well come here and see if it’s realistic. I think he’s answered the question.”Dunaden and Protectionist both used the Kergorlay en route to Melbourne Cup glory. Defiantly was cut to 12-1 by some firms for Flemington on the first Tuesday in November.It sealed a notably productive weekend for jockey Dylan Browne McMonagle on the back of his 723-1 five-timer at the Curragh on Saturday, highlighted by Green Empress pouncing late to land the Group Two Debutante Stakes.In other news, jockey Gary Noonan, is reported “in good spirits” in Cork University Hospital after being airlifted from Killarney on Saturday following a fall in a maiden hurdle. The Irish Horseracing Regulatory Board said on Sunday Noonan is being treated for a chest injury.The IHRB also confirmed that jockey Patrick O’Brien will be discharged from University Hospital Kerry in the coming days following a pelvic injury. Another rider Joey Dunne is reported “sore” but should return to action shortly.O’Brien and Dunne were both hurt at Killarney on Thursday where their treatment on course resulted in the final two races that evening being abandoned.“It was unfortunate we were unable to run the final two races on Thursday, but the welfare of our participants is the priority at all times and with the medical attention required, and the fading light, it just wasn’t possible,” an IHRB spokesman commented.Monday’s Ballinrobe action sees Jazzy Matty and Bowensonfire, who both ran at Killarney on Saturday, due to make quick reappearances in a conditions chase.