Rory McIlroy has struggled with his game and his motivation since completing the career Grand Slam. He now faces the sternest of challenges at Oakmont.

The Masters champion said he had been struggling to find motivation and in his second round at Oakmont showed frustration, but made it to the weekend.

Heading into the U.S. Open this week, Rory McIlroy has been disabused of any notion that life once he completed the career Grand Slam with that win at the Masters would be smooth sailing.

Rory McIlroy is making no apologies for savoring the biggest accomplishment of his career, but insists Oakmont Country Club has his full attention this week.Since claiming his first Masters title in dramatic fashion in April,

Rory McIlroy admitted on Thursday that finding the motivation to work on his game has proven a bit difficult after getting the Masters' monkey off his back at this year's tournament.

OAKMONT, Pa. — It seems like a lifetime ago that Rory McIlroy knelt on all fours at the 18th green at Augusta National sobbing uncontrollably after reaching his ultimate goal of winning the Masters and completing the career Grand Slam.

McIlroy's edge has been tough to rediscover, buried somewhere beneath the satisfaction of finally conquering Augusta National to become only the sixth player to win all four majors in his career.

Rory McIlroy said he's at times struggled to find motivation since his Masters win. Scottie Scheffler explained the phenomenon.

Five-time major winner Rory McIlroy had a disappointing first round at the US Open and got off to an even worse start in the second.