Rory McIlroy(-16)

Runner-up: Phil Mickelson

Rory McIlroy won his second PGA Championship at Valhalla, shooting 268 (-16) to win by one shot over Phil Mickelson. McIlroy sealed the win with a dramatic chip-in birdie on the 17th hole and a par save on the 18th. The win made McIlroy the World Number One and holder of four major championships at age 25, completing his career Grand Slam.