Diamond Necklace tasted defeat for the first time as Aventure served up a reminder of her top-class credentials in the Sumbe Prix Jean et Louis Romanet at Deauville.
Source: [Sky Sports](https://www.skysports.com/racing/news/12040/13576310/deauville-aventure-ends-diamond-necklaces-unbeaten-record-with-sumbe-prix-jean-et-louis-romanet-win)