Day one of the 2025 Breeders’ Cup at Del Mar saw Aidan O’Brien extend his record as the most successful Breeders’ Cup trainer with a landmark 21st win, thanks to Gstaad’s breakthrough victory in the Juvenile Turf. After three previous Group 1 near-misses, Gstaad dominated despite a wide draw, showcasing O’Brien’s continued dominance in top-level racing with 26 Group 1 wins this year, just two shy of his own world record. Meanwhile, Donnacha O’Brien secured his maiden Breeders’ Cup success as Balantina, ridden expertly by Oisin Murphy, triumphed in the Juvenile Fillies Turf, highlighting the O’Brien family’s strong presence at the event.

Other notable performances included Super Corredora’s win in the Juvenile Fillies and Ted Noffey’s victory in the Juvenile, both delivering impressive displays for their connections. Despite some setbacks for Aidan O’Brien earlier in the day, including a scratch and an eighth-place finish, his stablemate Brussels ran a strong second in the Juvenile Turf Sprint. The day underscored the high level of competition and the emergence of new stars, while also emphasizing the skill and preparation behind the scenes that contribute to success at this prestigious racing festival.