OAKMONT, Pa. (AP) — 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. The chaos begins when the score starts to count in the opening round Thursday. Oakmont is reputed to be the toughest course in the land. The U.S. Open prides itself on being the toughest test in golf. Scottie Scheffler is the favorite. He’s coming off three wins in his last four starts. That includes the PGA Championship. U.S. Open official says they don’t try to protect par. Oakmont usually does that for them.