Casey overcomes triple-bogey to tie for US Open lead

And after all that, Casey finished tied for the lead at 7 under, along with Koepka, Brian Harman and Tommy Fleetwood. That position on the leader board-the best he's been in after 36 holes in nine U.S. Open starts-had him sounding more positive after the round than his score would suggest. But consider the fact that he started par-birdie-bogey-par-triple-bogey to drop all the way to 2 under, five back of Fowler at the time. "I have a tee time on Saturday (and) so you just kind of learn along the way to never really give up". "We'll just keep doing the same thing I've been doing", Holmes said. "So it's pretty simple, I just didn't get it in the hole fast enough".

"If you hit good shots, you have a chance for birdies here", Harman said. "I think it's going to produce a really good victor at the end of the week".

Harman, a two-time PGA Tour victor from Georgia, said, "I was pretty nervous this morning and I got off to a little shaky start". His turnaround came on the eighth hole when he proceeded to go on a run of five straight birdies that brought his score back under par for the day.

He added: "It doesn't matter how good you hit it, if you struggle on the greens, there's nothing you can do". That includes the other two Kentuckians in the field - former St. Xavier standout Justin Thomas and ex-Louisville Cardinal Adam Hadwin - who are both at 2-under par. The 2011 U.S. Open champion missed the cut at that event with two rounds of 77-71, and this marks the third time in the last six years he won't be around for the weekend at the second major.

Newly branded as the "ultimate test in golf", the U.S. Open has always been famed for its toughness and Erin Hills was expected to add to that hard-man reputation. Some of it nearly takes the bombers out of it. Unlikely as it seems, that was the last major he played on the weekend.

Eight of the top 12 in the world will not be around for the weekend at this most unusual U.S. Open, where the top 60 and ties advanced to the final two rounds.

"It always does that", he said.

Right behind was a trio of players that included Rickie Fowler, who went 28 holes before making his first bogey and then went three holes without making a par. "It sets up really well for me, especially if I'm driving it like I did today". "You don't think you're going to shoot 7-under par at the U.S. Open".

It happens every year at U.S. Opens.

Matsuyama will be the top-ranked player at Erin Hills over the next two days after Dustin Johnson, Rory McIlroy and Jason Day all failed to make the cut.

Johnson was hitting it so well that he appeared to be safe even when he was on the cut line. He bogeyed the 11, 12 and 13 holes and missed an easy birdie putt on the par five 14. There no longer is a 10-shot rule that would allow anyone within 10 shots of the lead to make the cut. "I feel pretty confident", Koepka said after his round. "I couldn't possibly shoot any higher than I did". I guess I've just kind of always been that way.

He loved Erin Hills, a long golf course with the widest fairways in U.S. Open memory, a setup that seemed ideal for one of the game's best drivers. McIlroy came to life when it was far too late.

Day, who had made the cut at every major since the 2012 PGA Championship, followed up his opening round 79 with a 75, leaving the Australian anchored near the bottom of the leaderboard at 10-over.

None of the four players tied for the lead has ever won a major tournament.