A frustrated Rory McIlroy became an Open Championship also-ran on Saturday, falling to five over par with a third-round 73.
After eight birdies in his first 25 holes at Royal Lytham, the world number three has had only one in his last 29.
"I got off to a bad start and couldn't really do much from there," said McIlroy, who had already dropped four shots by the time his only birdie of the day came on the 336-yard 16th.
The 23-year-old came into the week having missed four of his last six halfway cuts, but with top-10 finishes in the other two.
"Just lack of consistency with my swing," McIlroy said when asked what the problem was.
"Whenever you're not confident in the shots that you're trying to hit, then it is tough to sort of trust it.
"I was up for it this morning trying to go out there and post a good score, but after playing the front nine like I did you're just trying to shoot the best score you can.
"And for me today that was only a 73. I'm frustrated, but that's the way it is - that's golf. You just have to get on with it and keep trying and keep practising and stay patient until it turns around.
"It was good and then all of a sudden I just started not to really trust it yesterday. It just sort of spiralled from there.
"To be honest I'm getting used to it. The last few weeks haven't been so great. Every tournament or every major that you don't play well in or you don't win is a chance missed."