Paul Casey opened the door to his Order of Merit rivals with a terrible finish to his second round in the Alfred Dunhill Links Championship.
Casey drove out of bounds on the 18th at St Andrews - missing arguably the widest fairway in golf - to run up a double-bogey six in a round of 74.
That was 11 shots worse than his opening effort at Kingsbarns and left the 29-year-old five strokes off the lead held by Wales' Bradley Dredge.
More significantly, it also left him tied with Ryder Cup team-mate Robert Karlsson on seven under and two shots behind another K Club hero, Ireland's Padraig Harrington, two of his rivals for the money-list crown.
Casey is currently €120,000 ahead of David Howell and €370,000 clear of Karlsson. But the vast amounts of prize money on offer here - the first prize is €631,000 - and in the season-ending Volvo Masters at Valderrama means Karlsson, Henrik Stenson, Harrington and Colin Montgomerie are among those still in with a chance of topping the standings.
"I was trying to sneak it up the right-hand side on 18 and just hit a poor drive," explained Casey, who led by one overnight after his opening 63.
"Everything that went well yesterday went wrong today. I didn't make any putts and didn't have control of the golf ball particularly well.
"Although I got off to a good start with two birdies, it was difficult to get any momentum with the time everything was taking (the round lasted almost six hours) and having to wait on every hole.
"When you're shooting two over par there are plenty of other things to think about other than the Order of Merit - but I'm looking forward to playing Carnoustie.
"It's a difficult course but it makes you hit good shots, and if you do you will be rewarded. If you don't the score could be a lot worse than today!"
Karlsson and Harrington both returned scores of 69 at St Andrews, and the Dubliner is hoping for a second double victory in the event with partner JP McManus.
"The last time I won in 2002 we won the team event as well, and it's definitely better for your individual golf to be part of a team," said the Dubliner, who took three shots fewer than Casey on the 18th by driving the green to set up a birdie.
"I lost a bit of patience in the middle of my round but I focused more on the team score, and that gave me a lift."
Dredge added a 68 at Carnoustie to his opening 64 at St Andrews, a round which established a new course record for the lengthened Old Course.
"I have always found it hard to score around St Andrews. I must have played 40 or 50 rounds there and I think to score well there is a lot to do with course knowledge," said Dredge.
