Martin Kaymer recorded the lowest total ever set after 36 holes of a US Open as he stormed six shots clear of Brendan Todd at Pinehurst No. 2.
The German's second consecutive 65 meant a 130 halfway total, eclipsing Rory McIlroy's feat in 2011, when the Northern Irishman went on to claim an eight-shot win at Congressional.
Kaymer's all-round play over the first two days has been just as impressive as McIlroy's was then and, barring a collapse of epic proportions from himself or something spectacular from one of his fellow professionals, he should well be celebrating the second major win of his career come Sunday night.
Keegan Bradley, Kaymer's playing partner for the first two days, labeled the German 'as dialed in as I've ever seen'.
Starting out on the back nine where'd he shot 31 the previous evening, the 29-year-old Players champion rolled in a birdie at his first to immediately increase his lead to four.
Another followed at 13, and when he rolled in a 25-footer for birdie at 16 having saved himself from a three-putt bogey two holes previous, the signs were more than a little ominous.
That feeling of inevitability intensified on his inward nine as two further birdies in three holes, at three and five, saw him become only the sixth player in US Open history to reach double digits under par.
Only two have remained in that bracket, Tiger Woods at Pebble Beach and McIlroy at Congressional, both of whom went on to win at a canter.
And when the 2010 US PGA champ put his approach at nine - his 18th - to ten feet, it almost felt like a putt to seal victory.
Fortunately for his fellow professionals in the field, he missed it on the low side - but it probably won't matter.
His second consecutive 65 saw him card the best two opening rounds of a major championship ever, ensuring it will take something currently incomprehensible to stop him taking Justin Rose's crown and his second major title.
All is not completely lost, however, with a host of star names in the red chasing the leader.
American Todd is at four under, six back, and his compatriot Kevin Na - who lost in a playoff to Hideki Matsuyama at Memorial two weeks ago - is one further back at minus three.
McIlroy followed up his opening 71 with a 68, while fellow European and current world number two Henrik Stenson shot 69 for the second day running and is joined by the American duo of Bradley and Dustin Johnson at two under par.
The immensely talented Jordan Spieth has impressed again on the big occasion and is one under for the tournament, which at any other US Open would be classed as being in contention. As would level par, which is where Phil Mickelson finds himself, with hopes of completing the career Grand Slam fading fast - for at least another year anyway.
Matt Kuchar is also at one under, but all the talent of the players in red combined may not be enough to stop Kaymer lifting a major honour on Father's Day - just like he did on Mother's Day at Sawgrass.
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