Desc: Fighting Thorobreds: Directed by Harry Joe Brown. With Billy Sullivan, Marie Astaire, John Sinclair. After boxer Billy Barton gives blood to save the life of a seriously injured opponent, he becomes so weak that he can no longer fight. This prompts him to return to his former job as a jockey. He helps a horse-ranch owner to transport a thoroughbred to a big race in Kentucky. Then, when circumstances lead to their arrest, Billy is let out of jail in time to enter and win a boxing match for the purse, which he then uses to finance his entry in the race. Billy rides the horse to victory, thus saving the rancher and winning the hand of the rancher's daughter.