SARATOGA SPRINGS, N.Y. - With a mix of optimism and respect, trainer Gustavo Delgado and his son and assistant, Gustavo Delgado Jr., have gone about their primary task of the summer: preparing Caracaro (Uncle Mo) of the GI Kentucky Derby. The Delgados are based in South Florida at Gulfstream Park West, but brought Caracaro to Saratoga Race Course in July with the goal of earning enough qualifying points to make the 20-horse Derby. Following second-place finishes in the GIII Peter Pan S. July 16 and the Aug. 8 GI Travers...