Diamond Necklace extends unbeaten run to six with Nassau Stakes success at Glorious Goodwood
On 30 July 2026 at Glorious Goodwood, Diamond Necklace extended her unbeaten record to six by winning the Nassau Stakes. Ryan Moore swept past second-favourite Friendly Soul inside the final quarter-mile and finished two-and-three-quarter lengths clear.
Summer conditions at Glorious Goodwood set the scene for a performance that has immediately reignited talk about the autumn’s biggest targets in France and the US. The filly’s latest victory constituted her fourth Group One prize and came on her first start since June’s French Oaks. At Chantilly in the Prix de Diane she had prevailed by just a nose, a narrow success that is now followed by a more decisive display. Trainer Aidan O’Brien is considering an Arc trial as the connections weigh their autumn options.
In the Nassau Stakes, Ryan Moore produced a measured ride before making his move in the closing stages. Moore cruised past Friendly Soul inside the final quarter-mile on the way to a two-and-three-quarter length victory, leaving the runner-up unable to respond. The margin emphasised how much more straightforward this run was compared with the tight finish at Chantilly.
Diamond Necklace’s unbeaten streak now stands at six starts and includes four Group One wins, reinforcing her status among Europe’s leading fillies. Her previous success in the Prix de Diane (French Oaks) at Chantilly in June had been by the smallest of margins — just a nose — illustrating how she has progressed between outings. The Nassau performance offered a clearer indication of her current form and potential adaptability to different race scenarios.
Connections and observers immediately turned their attention to autumn targets in the aftermath of the Goodwood success. With the filly demonstrating both a winning turn of foot and a capacity to win decisively, an appearance in a major autumn event is under consideration. Trainer Aidan O’Brien’s mention of an Arc trial places Longchamp on the shortlist of possible destinations.
The win at Glorious Goodwood on 30 July 2026 solidifies Diamond Necklace’s reputation and adds momentum to plans for the rest of the season. How her team responds to the prospect of an Arc trial will determine whether she heads for France’s premier autumn contest or other high-profile targets in the United States.