For one weekend, it seemed like the good old days for the Aiken, South Carolina Training Center. In fewer than 24 hours, starting with the July 5 evening card at Prairie Meadows, horses that had trained at Aiken won the GIII Cornhusker H., the GI Belmont Oaks Invitational, the GI Belmont Derby Invitational and the GIII Kent S. For a training center whose horse population now peaks at about 110, it was a tremendous accomplishment. But such a run of success was not unusual. That is if you take a...