Breeders’ Cup 2025: all-conquering O’Brien arrives with sights on new record

The Ballydoyle squadron is at the heart of the European challenge in California this weekend

Aidan O'Brien's gallop towards an extension of his record for Group One wins in a season has slowed a little in recent weeks, but there was still a shield-beating sense of theatre about the scene as his team for the 2025 Breeders' Cup meeting at Del Mar this weekend made its way to the track for morning exercise on Wednesday.

Unlike 2024, when City Of Troy was being aimed at the Classic, there is no obvious headliner in the O'Brien lineup, but plenty of the horses trotting past in a well-ordered single file have banked at least one Group One already this season and four are expected to set off as favourite.