"Dark Horse" profiles horse trainer Doug O'Neill who is attempting a comeback after being accused of 'milkshaking' his horses. "Anatomy of a Nasty Pitch" interviews pitcher R.A. Dickey and examines the physics of his famous knuckleball. "Darts Wonder... (more)land" takes an in depth look at the world of professional darts. "America's Cup" previews a story on the famous yacht race.