NEW ORLEANS – When the owner Maggi Moss shelled out $40,000 to claim a horse named Delaunay last May 12 at Churchill Downs, her trainer Tom Amoss felt he was at least getting a solid animal. Delaunay has developed into something more than that. In the best race of his life, Delaunay comfortably turned back a bid from defending champion Gantry and won the $100,000 Thanksgiving Handicap by 2 1/2 lengths before an estimated crowd of 8,500 on a gorgeous opening day at Fair Grounds.