US Open Golf 2015 Leaderboard: Live Updates and Storylines to Watch for Sunday

Legends are made on the final round of the U.S. Open, and the golfers fortunate enough to enter Sunday within striking distance will have the opportunity to write their own legend on Chambers Bay Golf Course.

The round began with four golfers tied atop the leaderboard at four strokes under par, and there are only four more within three strokes of the lead. But with Chambers Bay playing tougher and tougher as the weekend goes on, more than just those eight golfers stand a chance at history.

Here's how the top of the leaderboard currently looks.

Spieth's World 

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It's Jordan Spieth's world, and those of us who watch the U.S. Open are just living in it.

Even with Dustin Johnson, Branden Grace and Jason Day tied with him at four strokes under par, the focus hasn't seemed to shift away from the star-studded 21-year-old. It's only fitting, after he set the sport on fire throughout 2014 and began his 2015 year with an historic Masters title.

Sunday could mark another history-making endeavor for Spieth, as ESPN Stats & Info told:

Spieth had his fair share of near-misses in 2014, but this year he's been money in final-round situations. As told by Shane Bacon of Fox Sports, his numbers on Sunday are ridiculous:

If Spieth wins the U.S. Open on Sunday, his dream year will continue. The quest for a grand slam will stay alive, and there will be even more reason to think of him as perhaps the game's greatest young player.

If he doesn't, of course, there are still plenty of reasons to believe the latter.

Who Can Struggle the Least?

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The early success that golfers like Spieth, Johnson and Patrick Reed had at Chambers Bay quickly made way for struggles Saturday. The course got tougher as scores began to plummet, leaving a wide-open final round for Sunday.

Over the last couple of days, Spieth, Johnson and Reed have all been seven strokes under par for the tournament during a stretch. A whopping 16 golfers had below-par scores before the weekend—only eight of them kept that going past Saturday's moving day.

Leave it to Rory McIlroy—perhaps the game's greatest golfer who is struggling to a four-over score—to best describe how Chambers Bay is unnerving these golfers, per ESPN news services:

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"Whenever you start to miss a couple, you start to get a little tentative," McIlroy said. "You start to doubt yourself. You start to doubt the greens a little bit. And then it just sort of -- it snowballs from there. I holed a few nice ones early on, but once I missed a couple, it got into my head and couldn't really get out of it."

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It wouldn't be surprising to see a score above par for Sunday end up winning the U.S. Open. As weird as that would seem, it's not out of the question after the leading score dropped from five-under to four-under following Saturday.

With how this course is playing, hanging tough and shooting somewhere around a 70 could be enough to win the championship.