Rory McIlroy's chances of winning the 2013 BMW PGA Championship suffered an early blow after a series of late blunders in his opening round left the Northern Irishman with a disappointing two-over-par score of 74.
The world number two bogeyed five of the last six holes on the West Course at Wentworth, meaning he ended the day eight shots behind clubhouse leader James Kingston of South Africa.
McIlroy made a promising start at the European Tour's flagship event, coming through the first 12 holes three-under par. However, the 24-year-old - affected by the cold weather and blustering winds - admitted his game took a turn for the worse in the afternoon.
"It was one of those rounds I let slip through my fingers," he reflected on Thursday. "It could have been something good and I could have been near the top of the leaderboard but instead I am where I am.
"The thing that gets me is the cold and I was wearing mittens all day. Your body just doesn't feel the way it usually does and we are so used to playing in warm conditions these days."
Now based in North America, the two-time major champion is much more used to warm weather climates, saying that the drop in temperature on his return to England has had a negative impact on his overall game.
"This is a little bit of a change," added McIlroy. "I hit a couple of loose tee shots on 13 and 17, three-putted 14 and then got a bit unlucky on 18 when my tee shot went through the fairway a little too far and into the bushes.
"I didn't really miss a shot for the first 12 holes and I feel that just now I'm not getting as much out of my rounds as I should do. Maybe it's just a matter of not letting the bad shots affect me as much. I don't know what I can put it down to."
McIlroy's round of 74 left him tied-79th after the opening day's play, and he'll be looking to pull back some ground when he tees off alongside his countryman Graeme McDowell and Scot Paul Lawrie at 8.25am on Friday.
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