Penguins captain Sidney Crosby has visited multiple specialists recently as he attempts to shake lingering post-concussion symptoms, the team's website said Wednesday. CTV News reported Monday that Crosby suspended his training after suffering a recurrence of concussion-like symptoms and wouldn't be ready when the Penguins open camp Sept. 16. Crosby's agent, Pat Brisson, denied the report, but the team said Wednesday that Crosby began suffering from headaches again when his workouts reached 90 percent.