This U.S. Open in 2011 was Rory Mcllroy's first major. By the end of 2014 Rory owned four grand slam victories and everyone thought the best was to come. However, 9 years later Mcllroy is stuck on 4 major wins and feeling pressure to increase the measure most important in golf. Despite his problems winning majors, Rory remains one of the top golfers in the game.
This video and excerpt below give you an idea just how impressive Rory's first grand slam actually was.

"The Show is over and now comes the rest of Rory Mallory's life. What can four remarkable and record-setting days do for a sport and a 22-year-old from a working Northern Ireland family? We're about to find out. He came to the U.S. Open a young promising gun. He leaves it the future of golf."
-- Mike Lopresti, Gannet