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Rory McIlroy started the day with a three-shot lead.
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will miss the cut after a 5-over 77.
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is in second place, but he trails McIlroy by six shots.
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shot a 3-over 74 to fall back to even par.
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Mickelson made it to one under for the tournament before hitting into the water on 18. He finished with a double-bogey and a round of 69.
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played far better in the second round than he did in the first.
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In addition to five birdies in the second round, McIlroy holed out for eagle on the short par-4 8th hole.
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He made it 35 holes without a bogey until he rinsed his approach shot from deep rough on 18, ending with a double-bogey 6.
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fired a 5-under 66 for a 36-hole total of 11 under the lowest 36-hole score in the 111-year history of the U.S. Open.
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used his small putter well on Friday. Garrigus is tied for third at two under par.
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Johnson continued to struggle on Friday, finishing at four over for the tournament.
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McIlroy and Mickelson played with Dustin Johnson the first two rounds.
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Mickelson went three-under on the front nine to get back to even par for the championship.
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shot a 71 and is two under for the event.
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shot a 73, dropping to five over for the tournament.
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missed the cut after rounds of 76-77, but the 16-year-old has plenty of U.S. Opens in his future.