The 125th U.S. Open is underway at Oakmont Country Club in Oakmont, Pennsylvania. For the 10th time, the world’s best will compete in golf’s toughest challenge on one of the world’s most difficult courses.

Much of the chatter about Oakmont this week has been about how difficult it's going to play. But there is still reason for optimism. For some.

The toughest test in golf is underway at the course reputed to be the toughest in America. Matt Vogt has hit the opening shot at Oakmont to start the 125th edition of the U.S Open.

High School junior Mason Howell is the youngest golfer at the US Open. Follow along with updates on his Round 1 score and results.

The U.S. Open began under partly cloudy skies on Thursday at challenging Oakmont Country Club where Bryson DeChambeau hopes to make a fast start to his title defence while tournament favourite Scottie Scheffler was hours from teeing off.

Palmer, 32 in 1962, was not only golf's leading man but a household name throughout the United States. He endeared himself to fans with his unique, homemade golf swing, a flair for the dramatics and otherworldly charisma. Adding to Palmer's popularity? The start of his career coincided with golf being televised for the first time.

Oakmont is relentless,” said the man who sets up the course for the toughest test in golf. “It’s a grind. That’s the US Open.”

McIlroy has been the nearly man of late at the U.S. Open, finishing runner-up the last two years, including squandering a two-shot lead with four holes to go last year, and hasn’t been outside the top 10 in his last six starts at the U.S. Open. How will he overcome his Masters hangover?