NEWMARKET, UK--A final-session high mark of 250,000gns carried the Tattersalls Horses-in-Training Sale out in ebullient fashion on Thursday. The buyer was Saudi Arabia's Najd Stud, which has been the leading purchaser in Newmarket this week with 14 horses bought for 2,791,000gns. One of the last added to the list was the day's leader, Shadwell's Laatansa (Fr) (New Bay {GB}), offered as lot 1447. Ronald Rauscher and Matt Camacho were among the early bidders for the 2-year-old colt but none could match the staying power of the Saudi team. Back in...