LOS ANGELES — Nearly all the work Dustin Johnson did in Thursday’s first round of the U.S. Open was undone in a matter of minutes in Friday’s second round at Los Angeles Country Club.

Johnson was in a great spot after shooting a 6-under-par 64 Thursday to stand just two shots out of the lead held by Rickie Fowler and Xander Schauffele.

He began his second round on Friday morning by making a routine par on the first hole.

Then things became anything but routine on the second hole, where he took a quadruple-bogey 8 and tumbled from 6-under par for the tournament to just 2-under.

He went from fourth place to 15^th place in one hole.

Here’s how it happened on the 497-yard par 4 second hole: It started with a drive into a left bunker. Then he only advanced his second shot 95 yards into the rough. His next shot didn’t clear the barranca (valley with high grass). He took a penalty drop to the fairway, hit his fifth shot over the green and didn’t get up-and-down.

“You just gotta drive it in the fairway here,” Johnson said after his opening round after hitting all 13 fairways. 

Johnson has a volatile history with the U.S. Open.

In 2010 at Pebble Beach, he lost a three-shot lead in the final round when he took triple bogey on the second hole.

He then double bogeyed the third and opened the door for Graeme McDowell to win.

In 2015, he three-putted the 72^nd hole to lose to Jordan Spieth by a shot.

In 2016, he bounced back and won the U.S. Open at Oakmont.

True to Johnson’s bounce-back ability, he birdied the third hole to get one of the lost shots back immediately.

Johnson has an otherwise positive history at the U.S. Open.

He’s made the cut 12 out of 14 times and finished in the top 10 five times, winning once. 

So far this year in majors, Johnson finished 48th at the Masters and 55th at the PGA Championship.

Defending U.S. Open champion Matthew Fitzpatrick had a hole-in-one on the short par-3 15^th hole Friday.

He got him to 1-under par after beginning the hole 1-over.

Fitzpatrick didn’t see the ball go in, but the roar around the green told him so and he went ballistic in celebration with his caddie Billy Foster and playing partner Cam Smith.

It was the third ace of the tournament on same hole, with Matthieu Pavon and Sam Burns both holing out on No. 15 on Thursday when it was playing at 124 yards.

On Friday, the hole was shortened slightly to 115 yards.