American Patrick Reed has admitted that he made a "stupid error" by swearing during his opening round at the World Golf Championship in Shanghai.
The 24-year-old was picked up by television cameras on Thursday having an expletive-ridden rant after three-putting on the 10th green.
After his second round on Friday, Reed told reporters: "At the level I'm playing nowadays you can't have outbursts and unfortunately I did and it happened to be on camera.
"I made a stupid error. Never should have happened. All I can do is just learn from it and move on I'm young and growing up, I had temper issues, on and off the golf course. I live and die through every shot.
"I love the game so much and I expect perfection, but no one is ever going to be perfect in this game. It's just one of those things that I have to learn how to deal with. It got the best of me this week."
Reed sits 10 shots behind leader Graeme McDowell after a second-round 73.
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