With Dubawi as its lynchpin, there have of course been plenty of red-letter days for Darley in recent years, but the results from the Arc meeting at Longchamp on Sunday can nevertheless be deemed to be extra special. Best of all was the victory in the Prix de l'Arc de Triomphe for the unbeaten Ace Impact (Ire), a member of the first crop of Cracksman (GB). That stellar performance was backed up by a first-crop Group 1 winner for Blue Point (Ire), who is leading the first-season sires' table and...