Rory McIlroy turned another major collapse into his grandest performance of all, hitting a wedge into 3 feet for birdie in a sudden-death playoff Sunday to finally win the Masters and take his place in golf history as the sixth player to claim the career Grand Slam. What should have been a coronation along the back nine at Augusta National turned into a heart-racing, lead-changing jaw-dropping finish at golf’s greatest theater that ended with McIlroy on his knees sobbing with joy and disbelief. Right when it looked as though he would blow another major, he delivered two majestic shots when nothing less would do.