Adam Scott is within striking distance of a drought-breaking US PGA Tour victory following a ball-striking masterclass on day three at the Memorial Tournament in Ohio.
Scott leads the elite field for iron play while recording his lowest ever 54-hole total at Ohio's Muirfield Village to sit just two strokes behind leader Martin Kaymer.
Scott found 12 of 14 fairways and hit a hugely impressive 16 of 18 greens in regulation during a six-under-par 66 that catapulted him to 13 under.
Two-time major winner Kaymer matched Scott's 66 to earn a 15-under total.
The two, who are close friends, will comprise Sunday's final group at the Jack Nicklaus-hosted $US9.1 million ($A13.1 million) event.
But both former world No.1s are in the middle of significant win droughts.
Scott has not won a tournament since 2016, while Kaymer's worldwide drought stretches back to 2015.
The 34-year-old Kaymer has not won on US soil since triumphing at the 2014 US Open.
Scott is hungry to secure victory at Muirfield Village and shake 18-time major winner Nicklaus' hand, which has become custom for the Memorial champion.
"It's been a while since (Kaymer and I) have won out here, so I'm sure we're both really going to want to play well and come away with a win," Scott said.
"There's a little something extra being the Memorial; it's one of those events that you'd really love to have on your resume before your career is over and I'm excited for the chance."
Kaymer, who also won the 2010 US PGA Championship, acknowledged fellow former world No.1 Scott would offer a fierce challenge.
"He doesn't have any weaknesses," the German said.
"People talk about him not putting well; I don't see that. I think he's a good putter and overall just a solid player."
Japan's Hideki Matsuyama (64) shares third with three-time major winner Jordan Spieth (69) and fellow American Patrick Cantlay (68).
Scott's countryman Marc Leishman (69) is tied sixth and an outside chance at nine under.
Rounding out the Australians are Aaron Baddeley (68) at six under and Matt Jones (69) a stroke further behind.
Five-time Memorial winner Tiger Woods posted a 70 to sit at four under but well out of contention.