The most savvy European horse people have long had autumn dates annually etched onto their calendars at courses like Woodbine, Arlington, Keeneland and Belmont, where sizable purses are up for the taking for those enterprising enough to travel. As the tempo begins to climb toward those fall features, however, there is another American racecourse that has gotten first run, and it is possible you have never even heard of it. Beginning on Sept. 7 through Sept. 16, The Runhappy Meet at Kentucky Downs-situated 2 1/2 hours southwest of Lexington on...