Sam Sangster's gathering of smart mares with which to launch the new National Stud stallion Diego Velazquez continued on the third day of the Arqana Breeding Stock Sale in Deauville, where he bought the session-topper, Invaluable (Invincible Spirit), in foal to first-season sire Vandeek for €121,000 from the Fairway Consignment. The unraced Invaluable (lot 774), now nine, is a sister to the Listed winner Emmaus, while their dam Prima Luce (Galileo) won the G3 Athasi Stakes. Recent G1 Grosser Preis von Bayern winner Bay City Roller (New Bay) features under...