"There's no such thing as a mistake." He doesn't mean it literally, of course. Evan Sandhu knows perfectly well how horses can make us repent of words and deeds. But he also understands that the greater your ambition, the more essential humility becomes. At Keeneland last November, Sandhu bought a mare named Sing Me Home (GB) (Muhaarar {GB}), carrying what proved to be a filly by Yaupon, for just $25,000. But both had already been sold on by the time the mare's 2-year-old by Justify, Nola Soul, won the Chesham...