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Final Fields Set for Champions Day at Ascot with O’Brien Team Changes Shaking Up Markets

Late switches by Aidan O’Brien and form doubts over top contenders have left Saturday’s big races poised to decide key races and the trainers’ title.

Overview

  • Race declarations for British Champions Day at Ascot have been confirmed for Saturday with full fields named for the Queen Elizabeth II Stakes and the £1.3m Qatar Racing Champion Stakes.
  • Aidan O’Brien made late tactical changes by switching Gstaad into the QEII and sending Constitution River into the Champion Stakes, moves that altered betting lists and race match-ups.
  • Calandagan is installed as the favourite for the Champion Stakes while Godolphin’s Talk Of New York heads the QEII market, with both races featuring rematches and high-profile international challengers.
  • Several leading runners arrive with recent below-par runs or unusual prep plans, notably Calandagan and Ombudsman needing to ‘bounce back’ and Bay City Roller stepping up to 1m2f just 13 days after the Arc.
  • The meeting carries major prize money and a narrow trainers’ championship margin, with Andrew Balding calling Kalpana a ‘must win’ as he seeks to hold a slim lead over O’Brien and shape the season‑long title race.