The son of Newmarket trainer James Eustace and nephew of former Hong Kong trainer David Oughton, David Eustace has quickly assembled a formidable record and reputation as a young trainer in Australia. An Englishman by birth, Eustace spent his formative years in his father’s yard before gaining valuable experience with Roger Varian. He was entrusted with travelling horses for his father and Varian, doing so on several occasions to Hong Kong. An amateur rider, too, Eustace then expanded his capabilities in Australian yards, working for Peter Moody before a stint with Peter and Paul Snowden. He joined Ciaron Maher’s stable soon after in Victoria, Australia and was promoted as Maher’s co-trainer in 2018/19. Since then, Eustace and Maher amassed over 1,000 wins, including the 2022 Melbourne Cup with Gold Trip. Eustace and Maher saddled elite level winners over sprint and staying distances, while also featuring in a series of hurdling and steeplechase victories. The pair won the national title in 2022/23 with 347 wins around Australia. He achieved 36 wins in his first season of training in Hong Kong (2024/25), including four victories by talented youngster Light Years Charm. He also registered his first Hong Kong training treble in April, 2025.