Rory McIlroy’s buildup to next week’s U.S. Open at Oakmont took a further concerning turn on Friday in the RBC Canadian Open. In his first start since his worst finish this season—a T-47 in the PGA Championship—the reigning Masters champion suffered an extremely rare setback—he missed the cut at TPC Toronto.

Rory McIlroy revealed the two issues with his all-round game that are concerning him ahead of next week’s US Open at Oakmont. McIlrory endured a week to forget north of the border at the Canadian Open, firing an eight-over-par second round to miss his first cut since the Open at Royal Troon last July.