An instant after his horse took a full-speed tumble, Jacky Martin's riding career ended. Nearly his life, too. Martin went headfirst into Ruidoso Downs' dirt. The Hall of Fame jockey's neck broke in three places. Paralyzed from his neck down, Martin received stabilizing treatments at several hospitals, including TIRR at Memorial Hermann. Since the Sept. 2 fall, he had been unable to breathe without mechanical assistance.