Kevin Na produced an outstanding finish to claim a share of the halfway Guide as Brooks Koepka crashed from the Shriners Hospitals for Children Open in Las Vegas.

Na holed over 125 ft of putts over the past six holes, two of these falling for eagle before a birdie-birdie finish capped a superb 62 on another day of non scoring in TPC Summerlin, while 2017 winner Patrick Cantlay fired a 64 to combine with the four-way tie on top.
Brian Stuard (65) and 2009 US Open winner Lucas Glover (63) additionally head into the weekend 12 under par, however Koepkas very first start since dropping out to Rory McIlroy in the Tour Championship at August resulted in a missed cut by four shots.
Na cruised to the turn in 31 prior to dropping his only shot of the afternoon in the 10th, but he enjoyed an extraordinary run of form on the greens down the stretch, holing putts from 45 feet at the 13th and 35 feet at the 15th – equally for eagle.
The 36-year-old got chances to fall from external 20 feet on each of the past two greens to complete the low score of the next day in which 42 places vaulted up the leaderboard.
Yeah, my putter had been hot, said Na with a wry grin afterwards. I began using a 60-footer on the very first pit, and I just kept making putts today. The putter was still working, although I hit a lot of good shots, also.
It one of those days when you stand over it and you believe everything. My stroke felt good and I felt positive over the putt. I was into focusing on placing a fantastic stroke on than attempting to create it if you understand exactly what I mean.
Cantlay jumped into contention with an amazing back-nine – his first nine – using four birdies and an eagle-two in the driveable par-four 15th adding up to an inward 30, although his scoring was more sedate on the front half as he mixed two additional birdies with a sole blemish.
The quartet have a one-stroke lead over Australian Matt Jones, who returned with an eight-birdie 63, while the Martin Laird of Scotland raced to and capped a 65 together with his seventh birdie of the round.
Former Masters champion Adam Scott is also under, with Bryson DeChambeau, Phil Mickelson and US Open holder Gary Woodland one further.
But world No 1 Koepka will have the weekend after he was not able to match the reduced scoring of his competitions, downing three birdies with a bogey and a double-bogey in the par-four 11th, at which he shot him four shots just to obtain the putting surface.
As the four-time major winners younger brother Chase added a 69 to his opening 66 to finish off the lead on seven under 45, But there will be attention for the Koepka family over the second half of the occasion.

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