"If you'd said to me 10 years ago I'd have a potential Derby horse and not run him in the race, I'd have said you were mad," said Johnston. "The Derby was the race all trainers most wanted to win. Sadly, that's no longer the case." Johnston's stinging words come soon after racing's chiefs at the British Horseracing Board announced measures to move back the closing dates for entries for all British Group One races to no more than nine weeks before running in an attempt to improve the quality of entries.