Donnacha O’Brien
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Donnacha O’Brien is a prominent Irish horse racing trainer and former jockey known for his successful career in the sport. He is the son of legendary trainer Aidan O’Brien and gained recognition as a talented jockey before transitioning to training. He notably won the Irish Derby as a trainer with Latrobe in 2018, showcasing his skills in both roles.
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Not in the pool (under ¢1).
Recent news mentions
Donnacha O'Brien saddled a first Breeders’ Cup winner with Balantina in the Juvenile Fillies event.
Willie Mullins supplies Breeders’ Cup shock as Ethical Diamond secures a first win and $5m prize – The Irish TimesThe Irish Times – major Irish daily, est. 1859·
Ireland· 2025-11-02
Ireland· 2025-11-02
Joseph O’Brien combined with his brother Donnacha to land the race as a trainer through Latrobe in 2018.
Ryan Moore has historic Irish Derby hat-trick in his sights aboard Epsom hero Lambourn – The Irish TimesThe Irish Times – major Irish daily, est. 1859·Ireland· 2025-06-23
Ireland· 2025-06-23
