He's among a group of 4 who have a 3-shot advantage on 4 under-par at Chambers Bay.
Rory McIlroy goes into the final round of the US Open golf with a lot of work to do if he's to trouble the leaders.
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The world number one is 8 shots off the pace-setters after finishing the third day on even par – 4 over for the tournament – at Chambers Bay.
McIlroy says it was a frustrating round.
