Guys like Justin Rose, Henrik Stenson, Rory McIlroy, Koepka, Sergio Garcia, Rafa Cabrera Bello, Matt Fitzpatrick, Tyrrell Hatton, Francesco Molinari, Tommy Fleetwood and Thomas Pieters have broken the gap between European Tour players and just pure golf stars over the last couple years, and they are still playing important events overseas.
Piercy's downhill putt on the par-five ninth, his last hole, gave him his seventh birdie of a bogey-free round.
In this AFP photo, Brooks Koepka of the United States watches his tee shot at the 16th hole during the second round of the PGA Tour's CJ Cup @ Nine Bridges at the Club at Nine Bridges in Seogwipo, Jeju Island, on October 19, 2018.
World number 111 Ryan Armour then heads a quintet of USA players on four-under, with the 42-year-old sharing sixth position alongside Jamie Lovemark, Pat Perez, Gary Woodland and Brian Harman.
Brooks Koepka wants a 2-for-1 at the CJ Cup.
He made six birdies and just the one bogey before signing for a five-under 67. He had 165 yards to the pin and landed his second shot to within 7 feet for an eagle.
In this AFP photo, Scott Piercy of the United States tosses the ball at the 15th hole during the second round of the PGA Tour's CJ Cup @ Nine Bridges at the Club at Nine Bridges in Seogwipo, Jeju Island, on October 19, 2018.
The unflappable one, who barely shows emotion on the course regardless of his score, said he tries to keep a simple approach. "It was a different golf course than it was yesterday, you were able to take advantage of these par 5s", said Koepka, who opened in 71 on Day 1. With three majors and only one regular tournament victory, Koepka is an anomaly on tour with more majors than regular tour wins.
"I guess you can call it caveman golf". I think the best comparison on Tour is Kapalua [home to the Tournament of Champions each January].
Piercy, the 36-hole leader, said even a small dip in the speed of the wind can make a huge difference.
"Obviously the wind didn't blow".
Rod Pampling could not consolidate on his opening round of 70 and slipped to a share of 22nd with his round of 73 while Adam Scott and Jason Day both made good moves early in round two before faltering over the closing stages of their rounds.
The disappointment proved to be a taste of things to come for Leishman, who was also runner-up at the Byron Nelson and had four other top-10 finishes in a solid but ultimately frustrating year.Back in the winner's circle, the 34-year-old is keen to cash in at the $9.5 million tournament in Korea.
"So I haven't exactly played great, but if I'd have just putted average I feel like I'd have got a lot better chance".
"As far as the hat goes, I was not prepared for the cold weather here".