Justin Thomas shoots 63, trails Brian Harman by 1 at US Open

However, the World No. 50 - featuring in his first major since 2015 - has played beautifully throughout the week, with accuracy off the tee a significant factor in his success. On typical U.S. Open greens, that would have run all the way off the back of the green. This is the first time in 25 years that the U.S. Open has played as a par 72. But he is the only one who carries the label of being the best player never to have won a major. That honour went to Brian Harman, who managed to keep his composure to hit an impressive round of 67 sneak into the lead on 12-under par.

Johnson put his weekend in jeopardy after missing a 6-footer for par on the par-3 13th.

However, the 26-year-old from Southport then bogeyed the sixth after hitting a poor chip across the green and dropped another shot on the eighth after firing his approach over the green.

Thomas was already on course for a share of the lead as he stepped up to the 18th having carded nine birdies against two bogeys in a spectacular round. Much like Johnson, it takes a lot to get him excited - even a share of the 36-hole lead at the U.S. Open.

Fowler was among those who wouldn't mind seeing the conditions toughen up for the final 18 holes.

Rickie Fowler, on the verge of being left behind, rallied with three straight birdies and shot 68.

Judging by the gallery around Summerhays, one could have mistaken him and his partner, Keegan Bradley, as contenders for the third-round lead. The only good thing about his opening round of 77 was that it was the lowest of his group, with Tiger Woods shooting 80 and Rickie Fowler an 81 for a combined total of 28 over par.

Casey started eagle-birdie and finished with two birdies over the final four holes for his 66. That wasn't almost enough to put Stricker into title contention on the longest course in U.S. Open history, especially after the rain-softened greens led to a birdie-fest that pushed the third-round lead to 12-under par, but it did answer any questions about whether his game remains viable in a golfing world obsessed with youth and distance. The latter quartet all shot 68 in round three. There are more red numbers on the leaderboard than on a Las Vegas roulette table, which goes against just about everything America's national golf championship is supposed to be about. "It's sometimes nice being out front because you can afford to make a mistake".

Thomas rocketed into contention on Saturday, carding a nine-under 63, the best round at a U.S. Open in relation to par that also equalled the lowest numerical score in any major.

Robert Streb was the last golfer to shoot 63 at the majors during the 2016 US PGA Championship.

It just wasn't enough to faze Koepka. He tied for 27th at Chambers Bay two years ago. Harman missed the cut in his previous two U.S. Opens. Majority had to come from far back going into the weekend, and it was hard to put together two good rounds. It's nearly like 'Well, whatever I do for the rest of the year, it's going to be a good year'. Thomas, Brooks Koepka and Tommy Fleetwood were one shot back.

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