Unbeaten filly lands fourth Group One prize Trainer Aidan O’Brien considering Arc trial The high summer sun was still beating down on Glorious Goodwood on Thursday but thoughts were beginning to turn towards the autumn’s showpiece events in France and the US after Diamond Necklace extended her un...
Source: [Guardian Sport](https://www.theguardian.com/sport/2026/jul/30/arc-on-horizon-for-diamond-necklace-after-dazzling-goodwood-success)