When Nan Mooney was seven years old, she sat down in her grandmother May-May's living room to watch her first ever horse race. In that single afternoon, she launched what would become a turbulent romance between a woman and a sport. My Racing Heart is part memoir, part journey into the compelling world of Thoroughbred horse racing. At its heart is Nan's relationship with her grandmother, an adventurer, racing connoisseur, and woman of courage and...