LEXINGTON, KY - Domestic and international shoppers galore were steadily making their way through the sales barns on a blissful Sunday morning in the Bluegrass--the quiet before the storm--a day before bidding opens for the 12-day Keeneland September Yearling Sale in Lexington. Following a competitive 2-year-old sales season this spring, the yearling auctions opened with strong demand across town in July and continued in upstate New York last month, leaving consignors optimistic of a strong market a day before the industry's bellwether yearling auction begins. "I think everybody on the...