The perceived wisdom is that if a trainer thinks he has a cluster of Derby contenders, then he hasn’t any. Perhaps there is something in the theory; Aidan O’Brien’s three winners of the premier Classic – Galileo, High Chaparral and Camelot – were respectively accompanied to post by zero, two and one stablemates. And the scattergun years – there were eight Ballydoyle runners in 2007, for instance, and six in 2009 – have tended to yield only minor placings.