Jordan Spieth knows he can make history in "many ways" this year and even has one eye on an unprecedented clean sweep of the four major championships.
Spieth is looking to become just the sixth man in history after Craig Wood, Ben Hogan, Arnold Palmer, Jack Nicklaus and Tiger Woods to win the Masters and US Open in the same year.
And the world number two can also became the first player since Gene Sarazen in 1922 to win multiple majors aged 21 or younger with victory at Chambers Bay.
"I have a chance to make history in many ways," said Spieth, who has recorded nine top-10 finishes on the PGA Tour this season. "But in order to do that, I have to really focus on this week, focus on the major championships and how I'm going to prepare for them. There are certainly a lot of goals left for the year.
"It's never even crossed my mind to let it kind of sink in that it's been a great year, and that it would be a great year at the end. If I didn't do anything the rest of the year, I'd be pretty frustrated at the second half.
"You can't win a Grand Slam unless you win the first (major), so I'm the only one with that opportunity this year. So I'm going to go ahead and focus on this week and see if I can put myself in contention."
Chambers Bay has received mixed reviews from the players with former Masters champion Charl Schwartzel saying luck will play a big part in the fast, dry conditions which were compared to the 2013 Open at Muirfield by local favourite Ryan Moore.
Much has also been made of how the numerous tees will see the course set-up changed each day, with the first and 18th capable of being played as either a par four or par five.
"To be honest, I think it's more just to get in our heads ahead of time," added Spieth, who approved of the changes made to the course since he shot 83 here in the 2010 US Amateur.
"I think if the wind is coming from the north, we're going to play the first as par-five and 18 as a par-four. If it's the other way, it'll be the other way. (Number) 12 is probably going to be a similar tee box every day.
"15 has an opportunity to change drastically, but if the greens are where the USGA wants the greens to be, I don't think that 245-yard tee box can or should be played. The way that green pitches, it would have to be a back left pin or else we're never going to finish the round. And they know that.
"In the 2010 US Amateur, there was a lot learned from us and from the USGA and so I think they have a great grasp on what they're going to do with the golf course."
US OPEN GOLF