South Africa’s Louis Oosthuizen shares the lead at the US Open with American Russell Henley and Canada's Mackenzie Hughes heading into the final round at Torrey Pines in San Diego.
Henley had been the co-leader at the halfway mark of the event with Richard Bland on five-under-par.
The Canadian achieved four birdies during his round but each was nullified by a bogey, as he carded an even par round.
Bland, who yesterday became the oldest man to lead the US Open at the halfway stage, saw his challenge falter.
The 48-year-old Englishman ended with a six-over-par round to drop to 21st place in the standings.
Hughes and Oosthuizen boosted their hopes after the duo finished with three and one-under par rounds on the third day of the tournament.
Oosthuizen earned a share of the lead heading into the final day by achieving a 50 yard putt for an eagle on the 18th hole.
The South African is hoping to earn a second major of his career after winning The Open Championship back in 2010.
Oosthuizen finished as the runner-up at the US Open in 2015.
He has two second placed finishes at the PGA Championship and a runner-up finished at the Masters.
Henley and Hughes will be targeted a first major title of their careers, with the latter already in uncharted territory having made the cut at the US Open for the first time.
The co-leaders will have the pressure of being chased by 2011 US Open champion Rory McIlroy and last year’s winner Bryson DeChambeau.
McIlroy shot a four-under 67 to mark the anniversary of winning the event 10-years ago, as the Northern Irishman moved to two shots off the lead.
He was joined by DeChambeau, with the American three-under-par for the day.
Spain’s Jon Rahm and Americans Scottie Scheffler and Matthew Wolf lie in joint sixth place, four shots of the lead.
The trio will hope to mount a charge on the final day tomorrow.