Live text commentary on the BBC Sport website and sport app. It's a little bit of a different challenge than what we faced in US Opens in the past.
Whether the United States Golf Association heard the complaints or not, the fescue on Holes 4, 12, 14 and 18 was cut back on Tuesday. It will allow guys to be aggressive, you'll hit a lot of drivers around here and you can be aggressive with your iron shots.
"I wasn't crying when I saw that rain last night and this morning", he said Tuesday.
The rough has been subject of criticism from Kevin Na among others but it is understood that the wet weather, not player influence, that prompted the cutting.
Knox, who is 39th in the world rankings, is content with his game after finishing tied for 37th at the FedEx St. Jude Classic in Memphis.
Jordan Spieth is bracing for what he believes is the toughest mental battle in golf as he attempts to reclaim his US Open crown at Erin Hills Golf Course. I wasn't crying when I saw that rain, it's a long golf course and it's only going to play longer.
"Over the past 10 days, I've played eight or nine rounds of golf", he added. "But I look at more during the round knowing that, OK, the middle part of my round's probably the hardest part of my round, per se". It's hard, there are a couple of good, hard holes. The grass is similar - green at Erin Hills, brown and dying at Chambers Bay - but both are relatively wide by U.S. Open standards. It's not supposed to be easy. "But if you hit it into that stuff, there's a chance you just have to hit back to the fairway with pretty much taking a penalty stroke". "They'll vary the tees and where the pins are; they should have fun setting up the course".
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"It means I can go out and play".
So far, the players who have been there seem to like the course, but of course none of them have yet to hit a shot in competition. "And then if the winds are reversed, you might have to do the opposite". From there, you could see how fast it just took off toward the hole. It (the rough) should be far out of play - just the wild balls should go in the fescue.
"(Erin Hills) is kind of rolling hills, although neither one has a tree that I remember on the golf course.
I don't blame Jon Rahm for not wanting to practice getting out of the rough, apparently out of a fear of injury, but the best way not to deal with it is to stay out of it.
Asked about the potential for a Scottish victor on Sunday, Knox, who will be in the same group as Laird over the first two days, said: "Well, there's three of us playing so that's obviously good".
MIKE DAVIS, USGA executive director: If you were to pace off the [fairway] widths [at Erin Hills] and compare them to, say, a Winged Foot or Pebble Beach or Oakmont, I dare say they're 50 percent wider and in some cases they're easily double the width.