Nearly an inch of rain fell on the course overnight, but scoring conditions were far from easy as the likes of former champion Jordan Spieth and Lee Westwood tried to move into contention.
A superb chip to three feet set up the birdie on the 597-yard first hole before he then demolished the short par-four second. But he missed a pair of 10-foot birdie chances in that stretch, and one of the birdies he made was a two-putt from 20 feet on the par-5 seventh.
Bolstered by a delicate, bogey-saving chip shot at the 18th green, Fleetwood posted a four-under-par 68 on Saturday to stand 11 under par, just one stroke back of American lefthander Brian Harman heading into Sunday's final round at Erin Hills.
Dustin Johnson of the US plays his shot from a bunker on the 16th hole during the second round of the 2017 US Open at Erin Hills in Hartford, Wisconsin. We've heard about it plenty over the years, and Johnny is often lambasted for bringing it up one too many times while holding the mic in the lead analyst chair for NBC. The only good thing about his opening round of 77 was that it was the lowest of his group, with Tiger Woods shooting 80 and Rickie Fowler an 81 for a combined total of 28 over par.More news: 30 killed, dozens missing, more feared dead in London tower block fire
Elsewhere, last year's U.S. Masters champion Danny Willett withdrew from the event with a sore back on Friday as the Englishman's injury woes continued.
Koepka also reached the green in two on the 667-yard closing hole for a two-putt birdie and a 68.
Oh, and how about this awesome Thomas birdie putt at the fifth!?!??! It's the first time since the rankings were introduced more than 30 years ago that the top three players missed the cut in the U.S Open.
"It's been an off-putting week for me", Spieth said.More news: Four-way tie at US Open
He was at 7-under 137, two shots clear of anyone else who played early in warm sunshine on a course that getting dry and crispy.
Former US Open winners Jordan Spieth and Martin Kaymer were big names who collapsed.
"I feel like the U.S. Open is supposed to be very uncomfortable", Thomas said.
"I'm looking forward to it very much".
The Kentucky native became the youngest player to shoot 50 on the US PGA Tour during the first round of his Sony Open victory in January. My main goal was to try and get it in a good spot for making a second putt, but once it started rolling it looked good. "I know I'm going to be nervous, but it's a good nervous - that's why I play, to get myself in this position, and I'm excited for the opportunity to see what happens". What's more, this course had seemed a flawless match for the considerable skills of No. 1 Dustin Johnson, No. 2 Rory McIlroy and No. 3 Jason Day.More news: Terry McAuliffe: 'We Lose 93 Million Americans a Day to Gun Violence'
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