World No. 1 and defending PGA Championship winner, Scottie Scheffler, believes that this week's U.S. Open, hosted at the Oakmont Country Club in Pennsylvania, will be quite the test.

The U.S. Open, often regarded as golf's toughest test, is being played at Oakmont Country Club for a record 10th time.

Here is how all 156 players stack up ahead of the U.S. Open at Oakmont Country Club, as the third major championship of the season is here.