When Dustin Johnson rested his head on his pillow Saturday night, he had a three-stroke lead over Graeme McDowell heading into the fourth and final round at the U.S. Open.

When he went to rest his head on his pillow last night, he wanted to punt it off the roof of his home, along with his golf clubs, his golf shoes and maybe even his caddy. That’s because Johnson completely imploded during the final round on Sunday, giving way for his playing partner McDowell to earn his first professional win in the United States. McDowell also became the first European to win the U.S. Open since England’s Tony Jacklin won at Hazeltine in 1970.

But back to Johnson. He dominated Pebble Beach on Saturday while shooting a 5-under par. He converted a par-4 on the 4th hole when he hit the green with an iron off the tee, then buried an eagle putt. He also birdied the 6th, 7th, 11th, 17th and 18th holes to take a three-stoke lead heading into the final round.

Then he woke up on Sunday and completely forgot how to play. He kicked things off with a triple-bogey and double-bogey on the 2nd and 3rd holes. By the time he reached the back nine, he had completely fallen off the leaderboard and wound up shooting an 82.

Granted, I would set a course on fire and tip over golf carts for an 82. But for a professional golfer, an 82 is a day to forget. In fact, this was one of the greatest collapses in major championship history, akin to Greg Norman’s disastrous performance in the 1996 Masters when he shot a 78 to erase a 6-shot lead. Even the announcers couldn’t believe how poorly Johnson was playing.

Nevertheless, give credit to McDowell for not imploding himself and taking advantage of Johnson’s demise. Unfortunately for McDowell, people might remember Johnson’s epic collapse more than they remember the day the 30-year-old from Northern Ireland become the first European in 40 years to capture America’s national championship.

After rain delayed the opening round of the 2009 U.S. Open on Thursday, play resumed on Friday and perennial favorite Tiger Woods is off to a brutal start.

Woods shot a 74 in Round 1, which leaves him 4-over-par after his first day. The 74 marks his second worst start ever at the U.S. Open, with his worst coming in 2006 when he shot a 76 in the opening round.

For comparison, when Woods won the U.S. Open in 2000 he shot a 65 in the opening round and when he won again in 2002, he shot a 67 in Round 1. Compared to his 74 this year, he would appear to have his work cut out for him, but don’t forget he shot a 72 in Round 1 last year and won his third-career U.S. Open so he’s not out of it – not by a long shot.

As of this post, Drew Weaver and Graeme McDowell lead all play with 69, but not all golfers have wrapped up play yet in the first round. So considering he’s only five shots back of the leaders with 54 holes to play, Woods has a ton of time to make up ground.

Check out the Official Site of the U.S. Open for updated scores and more on this year’s event.