The numbness and tingling would come and go, usually in a day or two. For Josh Beckett, this went on for years, an uncomfortable side effect of pitching for a living. The time, the condition persisted for six weeks, affecting his everyday life. "I'd try to drive with my right hand," Beckett said, "and my right hand would go numb." He could pitch, he said, but his arm would feel weak and heavy.