A trio of horses that visited the winner's circle over Fourth of July weekend will make their next appearances in the Fasig-Tipton auction ring Monday as part of the company's July Horses of Racing Age Sale. Stilleto Boy (Shackleford) (Hip 557) gave his resume a major boost last weekend with his first black-type win. On July 2, the sophomore gelding scored an emphatic victory beneath Jose Ortiz, taking the Iowa Derby by 4 1/2 lengths at odds of 16-1. The chestnut earned a 95 Beyer Speed Figure for that effort....