"I think to get out there early and play a good round really was to my benefit", said Berger, who was in a four-way tie with Finau, Brooks Koepka (72) and Johnson (77).
Only one of them did, which is why Koepka is the U.S. Open champion. Two strokes behind Anna Nordqvist and Lee-Anne Pace entering the round, Ryu had six birdies and bogey in the final round.
Stuart Manley closed with a 3-under 68 and beat Grant Forrest with a par on the third sudden-death playoff hole in the Hauts de France Open on the European Challenge Tour.
But, alongside his obvious raw power, the 28 year old was nerveless on the greens and deserved to join Ben Hogan (1950-51) and Curtis Strange (1988-89) as the only players in the last 75 years to complete a successful defence.
For a brief moment, it appeared reigning Masters champion Patrick Reed might haul his "Captain America" nickname out of the Ryder Cup and into a major. He's birdied six times in the final round. But Koepka now has two to Johnson's one, and it seems like his talent deserves more.
Berger and Finau shot third-round 66s.
Mickelson said he knew the action would bring a two-shot penalty, and that he had hit the ball to prevent it from rolling all the way off the green and to behind a bunker.
Koepka staved off a brilliant charge by Englishman Tommy Fleetwood, who matched the lowest score in tournament history, a seven-under-par 63 at Shinnecock Hills. But he stumbled on the back stretch, bogeying 11 and 12 and falling as far as four strokes off the lead.
"It's easy to look at it and think I was one shy, but there's so many positives to look at and so much that you can take and learn from it".
World number one Johnson, playing alongside Koepka in the penultimate group, saw the sure putting touch that had propelled him to a four-shot halfway lead, carded an even-par 70 to finish alone in third on 283. The pressure is on! Erin Hills is a big, wide course made for wind but the wind didn't blow and left a course very vulnerable by Open standards especially in the face of one of the longest hitters ever to play the game.
And he's still tied for the lead. He finished at 2 over and stood one shot out of the lead as he walked off the course. As he stood over a 9ft birdie putt on the 18th, Fleetwood knew he needed to hole it to become not just the first man to shoot 62 in a US Open but any major championship staged in America.
"When it goes over the edge, pars feel like birdies and bogeys feel like pars".
Fleetwood is finishing strong at 6-under through 14 holes and is now in second.
Zach Johnson told Sky TV, "Unfortunately, they've lost the golf course". So he made the turn at 1-over on the day with just two pars on the front nine.
Brooks Koepka finished off a great weekend at Shinnecock Hills with his second straight U.S. Open championship. It's a vast improvement from the 84 he shot yesterday.
Phil Mickelson was not in fact diaqualified for his actions yesterday after sinking his put on the 13th hole and now he's tied for 55th at 16-over 296.