Diamond Necklace continued her undefeated streak with a commanding victory in the Qatar Nassau Stakes at Goodwood. The filly, trained by Aidan O'Brien and ridden by Ryan Moore, made it six wins from six starts, extending her perfect record.

Having previously secured Classic wins in the French 1000 Guineas and French Oaks, Diamond Necklace was the 4-6 favourite against older competitors. Despite a challenge from Friendly Soul, Moore maintained control, and Diamond Necklace pulled away to win by two and three-quarter lengths. Moore expressed confidence, stating it was the best she had felt and that she is a "proper racing machine."

O'Brien was pleased with the performance, noting her progression and how she handled the increased weight. The filly has multiple options for future races, including potential runs in the Prix de l'Arc de Triomphe or the Breeders' Cup. Meanwhile, Friendly Soul, trained by Thady Gosden, ran a "fine race" against a top-class opponent and will have further opportunities.