The great myth of horse racing is that the game is the regal and royal Sport of Kings. It isn't. Not by a long shot.

Anyone who doubts this need look no further than Suffolk Downs, a once-proud racecourse graced in its glory years by boisterous throngs and champions such as Seabiscuit. Now the blue-collar East Boston track is one of many that have fallen on hard times. These days "Sufferin' Downs" is where grizzled Thoroughbreds come to end their careers, hopeful young jockeys aspire against daunting odds to begin them, and diehard fans cheer, curse and gamble on the entire fascinating...