Coli bacteria found in drinking water at US Open

Overnight leader Rickie Fowler faded as a group of four took charge of the US Open at Erin Hills. "I don't know that I've ever played a U.S. Open where I've had that much enjoyment".

Koepka made a lightning start with four birdies in his first seven holes on the back nine, as Fowler picked up a shot at the seventh to put the pair all-square at nine under. The Englishman shot a 1-under 71, but had to fight back from two bogeys and a triple bogey in his first six holes.

"You don't get many rounds at the US Open that are stress-free", admitted Fowler afterwards.

A rattled Casey immediately added another bogey to extend his miserable run before hitting the turbo-charger and firing off five consecutive birdies.

Fowler briefly had company at the top of the leaderboard when England's Paul Casey birdied the 11th from close range, but Casey then bogeyed the 12th and ran up a triple-bogey eight on the 14th.

Leishman is in a share of 13th place, three shots off the pace.

While Erin Hills was still not playing as hard as many past U.S. Open courses, it was beginning to firm up from the early week rain, plus the USGA had a few tricks up its sleeve. But under sunny skies on Thursday, Erin Hills looked more friend than foe with 44 golfers breaking par to set a record for the opening round of a U.S. Open.

Erin Hills fought back on Friday and the world's top three players won't be around for the weekend at the U.S. Open. The cut was at 1-over 145, tying a U.S. Open record set in 1990 at Medinah.

McIlroy was never in the short grass from the 11th hole to the end on Thursday when he opened with a career-worst 78, and he didn't do almost enough in the second round until it was far too late. But a 675-yard par-5, nobody's hitting to that.

With 12 players within two shots of the lead, the U.S. Open leaderboard could see a lot of changes on what is known as "moving day".

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"We have come back sooner than I thought, so that's been nice really".

Paul Casey declared himself satisfied with a "roller-coaster" second round at the U.S. Open, which saw him break par despite dropping five shots in four holes on his first nine.

The rankings began in 1986 and this is the first time the top three players in the world have missed the cut in a major.

McIlroy won the US Open with a record 16-under-par total in 2011, but was a combined 50 over par for his seven other appearances before this week and missed the cut at Oakmont past year following rounds of 77 and 71.

"All in all, I've got to be happy", Els said.

While McIlroy and Day will return to competition next week at Travelers, Johnson, who welcomed a second son to the family earlier this week, will be taking a month off.

"I'm definitely disappointed I'm not playing the weekend, but there is a lot I can take out of it".

World No. 3 Day, needing a miracle to get back into contention after his opening 79 carded a three-over-par 75, leaving him 10 over and way outside the projected cutline. "So I did a really good job of staying present, staying focused on the next shot".

Casey birdied five holes in a row after the rough stretch and was the first player in the clubhouse at 7-under.

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