When Casey Stengel was named the manager of the Yankees in 1949, baseball wags were stunned. What had Stengel ever done? His work managing the Brooklyn Dodgers and Boston Braves had been long on personality and remarkably short on success. They thought the Yankees would never be able to compete with the Red Sox or Indians with that broken-down old man in charge. At the All-Star break, the Yankees looked like a banged-up bunch of also-rans, not like...