Masters Tournament champion Jordan Spieth made an early move up the leaderboard as the second round of the US Open Championship began.
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.
The World Number Two can also became the first player since Gene Sarazen in 1922 to win multiple Majors aged 21 or younger at Chambers Bay and was just two off the lead when he began his second round with a birdie from seven feet on the tenth, his opening hole.
Spieth looked certain to get even closer to overnight leaders Henrik Stenson and Dustin Johnson when he drove the green on the par-four 12th, only to three-putt for par after missing from two feet.
The US Ryder Cup star made amends for that missed opportunity by holing from 15 feet for a birdie on the 14th to move within what was now a three-way tie for the lead.
That was because 22 year old amateur Brian Campbell, who had carded an opening 67 late on Thursday, had birdied the second and third to move to five under par.
Campbell had missed the cut by a shot on his debut at Pinehurst last year.
Spieth, who set numerous records on his way to victory at Augusta National in April, rolled in birdie putts on the 15th and 17th - and produced a superb 40-yard bunker shot to save par on 16 - to claim the outright lead.
At six under par the 21 year old led by one from Stenson and Johnson, with Campbell dropping back to four under after three-putting the fourth for his first bogey of the day.
