The summer of 2012 has become the Summer of 43 - as in the summer of R. A. Dickey, the 37-year-old knuckleball pitcher who wears Number 43 on the mound for the New York Mets. As his knuckleballs flutter and drop through the strike zone, befuddling batters and producing a 12-1 record by the All Star break, Dickey has become one of the greatest feel-good stories of baseball history: the man who found redemption, after years of adversity, by mastering...