McIlroy, who started the day with a six-stroke lead over 25-year-old American
"It's pretty hard to describe right now, to be honest," McIlroy said in a television interview when asked about his victory. "All I know is that I won my third major championship and I'm, you know, three legs into the four towards a career Grand Slam at age 25. I'm feeling pretty good right now."
Fowler, who parred eight of the first 10 holes, had back-to-back birdies at the 15th and 16th holes to move to within two strokes of the lead as well, but McIlroy birdied the par-five 16th to open a three-shot lead. Fowler would birdie No. 18 as well to card a five-under 67. It was his third consecutive top-five finish in a major this year.
Nicklaus, who has a record 18 victories in Grand Slam tournaments, won his fourth major at age 25, the 1963
Woods, who won his 14th and last major at the 2008
McIlroy, who won the 2011 U.S. Open and 2012