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.

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 fired a 1-over, 71 in the first round of the RBC Canadian Open - his first tournament since the PGA Championship where he finished 3-over and 15 shots back of Scottie Scheffler, who went on to win the tournament.

The North Course at TPC Toronto at Osprey Valley in Ontario is hosting the Canadian Open for the first time and the PGA Tour pros seem to be taking a liking to the scoring opportunities being presented. Keep tabs on the live leaderboard for the 2025 RBC Canadian Open all week.

The headliner for the RBC Canadian Open field will not be playing on the weekend, as Rory McIlroy's week went from bad to worse on Friday, as he followed up his 71 on Thursday with a 78 in the second round to miss the cut by 12 shots .

In the days leading up to the RBC Canadian Open, Rory McIlroy finally addressed his driver being deemed "no longer permissible" ahead of the PGA Championship where he finished 3-over and 15 shots back of Scottie Scheffler,