Kiwi golfer Danny Lee has fallen off the pace at the PGA Championship in New York, after a disappointing second round on Saturday (NZ time).
While Lee struggled on the course, overnight leader Brooks Koepka continued his surge atop the leaderboard, holding a seven-shot lead at the halfway stage of the tournament.
Starting the round on six-under-par, one shot behind American Koepka in outright second, Lee failed to hit fire as he finished the round with a four-over-par 74 and sits tied for 10th.
Lee's round consisted of four bogeys, two double-bogeys and four pars at Bethpage Black.
The 28-year-old started on the back nine and bogeyed two of the first three holes before the pair of doubles happened on the 15th and 16th.
But Lee was undeterred, as he birdied three of the first four holes on the front nine. He did bogey the sixth and seventh before birdieing the eighth.
Lee admitted after his round that he ran into equipment issues just before he teed off, which hampered his performance.
The day belonged to Koepka, who entered the record books with his dominate round.
Koepka's second of 12-under 128 shattered the 36-hole record at a golfing major, breaking the mark of 130 set at the Masters by Jordan Spieth, the US Open by Martin Kaymer, the British Open by Nick Faldo and Brandt Snedeker and the PGA Championship by Gary Woodland.
Koepka's nearest challengers sit at five-under - including fellow three-time major winner Jordan Spieth (66) and Australian Adam Scott (64).
World number one Dustin Johnson (67), Daniel Berger (66) and Kelly Kraft (65) are all at four-under.
Meanwhile Tiger Woods, who won the Masters in his last start, missed the cut by one shot. He will try again for his 16th major victory at the US Open in June at Pebble Beach.