Of the five other players who shot a 63 in the third round at a major, none went on to win.
Day thought his game was perfectly suited for Erin Hills. 205: Tommy Fleetwood (ENG) 67 70 68, Brooks Koepka (USA) 67 70 68, Justin Thomas (USA) 73 69 63.
"If you look at the golf course and you even talk to me, Jason or Rory, this course sets up ideal for us".
At the opposite end of the board it became a first in a Major with the current World No.1, No.2 and No.3 each missing the cut since the World Rankings began in April 1989.
Behind the leading quartet, a logjam grouped eight players within two shots of the lead.
Jamie Lovemark, Rickie Fowler and J.B. Holmes, meanwhile, are a shot further back from the leaders.
South African Louis Oosthuizen, the 2010 British Open champion, roared into contention going six-under through 16 holes to sit one shot back alongside American Patrick Reed who was also putting together an impressive scorecard going five-under with four to play.
"I don't know", Thomas said when asked what he'd say to Miller, "but I'll be pretty happy". "There were a couple of loose swings out there, but when you shoot 65, you can take those".
Day and McIlroy never had much of a chance, both out of the picture before Johnson even teed off.
Wind was supposed to be one of the main defences at Erin Hills, which is the longest U.S. Open course in history but also has the widest fairways the tournament has seen. His only bogey came at the par-4 third hole. On the closing nine, Justin shot a score of 32, with one eagle, three birdies and one bogey. I had no idea that 9 under was the best ever in an Open, so that was pretty cool once I saw my card. "It was a bit of a roller coaster".
Bank raises lending rates after Fed hike
Policymakers said the economy was strengthening and that they viewed recent softness in inflation as largely transitory. The benchmark lending rate was lifted by a quarter percentage point to a target range of 1 per cent to 1.25 per cent.
It didn't for Rory McIlroy, either.
Starting the day in a respectable position of even-par, Adam Scott sealed a likely early exit with a disappointing 75.
"Today I felt really good, played really well".
He finished at 12-under 272, the first player to complete a U.S. Open double digits under par.
Despite a flurry of late birdies it was not enough to turnaround an erratic round littered with errors and missed opportunities.
Some of those who came out to the U.S. Open said they wanted to experience the tournament and check out the handsome Erin Hills Gold Course.
"If somebody shoots nine under tomorrow in the top few (as Thomas did on Saturday) then I'll have to shoot 10, I guess".
But he under-hit a pitch into the final green and then got too heavy-handed with the putter and watched his ball race past the flag, off the green and down the run-off area to leave a tricky up and down. It's just a matter of getting competitive rounds under my belt.
"Out here I'm just thinking a lot about my stroke, stance, stuff you would rather not be thinking about", he said. "Looking forward to the next two days".





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