Stumbling offense, bumbling defense, grumbling fans. It was shaping up as a typical fiasco for the fifth-place Chicago Cubs. Then Starlin Castro, a 20-year-old rookie who knows nothing of curses, jinxes and 102 years of futility, legged out an infield single. And the Cubs were off and running. Held to two hits through five innings by Milwaukee starter Manny Parra, the Cubs put up 14 hits the rest of...