IT is remarkable how often it happens that some of a stallion’s best results do not appear until after he is no longer available to breeders.

We have seen it a few times this year, and two Group 1 classic winners for Duke Of Marmalade (by Danehill) have been among the main examples in 2015, but that now South Africa-based horse is not the only such stallion to record a Group 1 double this season.