After Scottie Scheffler's latest win at the Memorial Tournament, much of the talk coming into this week's RBC Canadian Open was how Rory McIlroy would respond in his first start since the PGA Championship.

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.

McIlroy turned in 5-over 40 and then started his back nine in bogey-double-par-bogey. In danger of shooting in the 80s, he played his final four holes in 1 under. The 78 was McIlroy’s worst score since shooting the same number in the first round of last year’s Open Championship.