Reigning champion Rory McIlroy puts on a stunning short-game performance during the second round of the Masters to take a six-stroke lead into the weekend. Among the many rules at Augusta National — no cell phones, no booing, no lying in the grass — patrons are not allowed to run. Somebody tell Rory McIlroy. The defending Masters champion was sprinting away from the field Friday, building a six-shot lea... [3564 chars]