Oh, for a daughter to take the legacy forward! That was the late Marty Wygod's thought, year after year, when his dual Grade I winner Tranquility Lake (Rahy) persisted in stubbornly producing colts. True, her Storm Cats had served his program well: After Market and Courageous Cat both won Grade Is, while their brother Jalil made $9.7 million as a yearling. But then, finally, the mare delivered a filly--her very last foal, by Smart Strike. Emily Bushnell, his daughter, recalls ecstatically calling Wygod at 5 a.m. when the foetal test...