In his first start since a wire-to-wire win in the British Open, McIlroy picked up his first World Golf Championship title at Firestone. And just like Royal Liverpool, the 25-year-old from Northern Ireland made it look easy.
Sergio Garcia had a three-shot lead going into the final round. McIlroy opened with three straight birdies to take a one-shot lead. He never trailed the rest of the way, taking the lead for good with an 8-foot birdie on the 11th hole.
Tiger Woods withdrew after eight holes with back pain from jumping hard into a bunker on the second hole. It was only his third event since returning from back surgery.