The sixth race Wednesday at Churchill Downs was, on the surface, rather unremarkable. It was just a $30,000 maiden claimer for 2-year-olds, normally the type of race where even the winner usually doesn't amount to much. But the race, won by a horse named Awesome Hawaiian (Awesome Bet), turned out to be one of the most remarkable and heartwarming stories of the year. You probably know prominent owner John Stewart and his family and their work to save horses from slaughter. But 99 times out of 100 those horses never...