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.

A field of 156 golfers will battle it out at the 2025 U.S. Open for the championship trophy and the multi-million dollar prize. Here's how much:

Mason Howell doesn't have to worry about paying out a U.S. Open's field worth of drinks if he hits a hole-in-one this week at Oakmont. At 17 years old, he wouldn't even be allowed to buy them. The youngest player teeing it up on Thursday and Friday is looking to become just the third 17-year-old to make the cut at a U.

OAKMONT, Pa. — The shot doesn’t matter. It could be on the driving range, the first tee box or the 18th fairway — a quiet practice round at home or the Sunday of a major championship. Scottie Scheffler doesn’t go off-script.

The star of this U.S. Open is Oakmont. Rory McIlroy had a peaceful start to his final day of practice with the sun rising on the horizon.

A former club president, known as Old Chainsaw, started the process in 1994 under cover of darkness. It transformed play.