Oakland Athletics catcher John Jaso remains out indefinitely with a concussion after visiting a specialist. Manager Bob Melvin was hoping Jaso would be cleared to return after seeing Dr. Micky Collins in Pittsburgh on Wednesday. Melvin said Jaso, sidelined since last month, will return to Oakland and won't resume baseball activities for at least a few days. Jaso also sat out most of last season with concussion-like symptoms. More...