by Jessica Martini & Brian DiDonato LEXINGTON, KY - The Keeneland September Yearling Sale continued to see strong action at the top, but an elevated buy-back rate at the first of two Book 2 sessions Wednesday in Lexington. A colt by Uncle Mo from the Gainesway consignment brought the day's highest bid when selling for $950,000 to bloodstock agent David Ingordo. In all, 185 yearlings sold for $40,861,000. The average was $220,870 and the median was $180,000. Through three sessions, 394 head have grossed $126,076,000 for an average of $319,990...