U.S. Open at Oakmont is testing the world's best golfers like few tournaments do. Here's how the cut line works at golf's toughest major.

From an overhead view, the sight is somewhat jarring. The Pennsylvania Turnpike essentially cuts Oakmont's golf course in half.

The first round of the U.S. Open was played under sunny skies and no rain at the Oakmont Country Club on June 12. The field might not be as lucky for the second round. The weather forecast calls for more of a rain chance, especially between Noon and 5 p.m. According to weatherunderground.com.

What makes the U.S. Open at Oakmont so difficult for the world's best? Two holes from Scottie Scheffler and Jon Rahm tell the story.

Coming into the 2025 U.S. Open, much of the conversation centered around the difficulty of Oakmont Country Club. On Thursday, despite some solid scoring early, we saw just how difficult Oakmont would be as the average score in the early wave was more than 5 over par despite the best conditions players will see all week.

J.J. Spaun’s first-round 66 held up for the early lead as Rory McIlroy, Scottie Scheffler and a host of others were simply overmatched by the course.

According to weatherunderground.com, the first round of the US Open on June 12 will be sunny with a mix of clouds and hot for Western Pennsylvania, with a high of 87 degrees and a low of 65. There is a 6 percent chance of rain and the wind will be WSW at 5-10 mph.

The game's stars have dominated the last six majors and most signature events. What will it take for a sleeper to emerge at Oakmont?