October 17-20
Nine Bridges, Jeju Island, Korea
$9,750,000
Round 1, Round 3, Round 4

A nine-under-par round of 63 sent Justin Thomas to the top of the leaderboard at The CJ Cup in South Korea.

Thomas, the champion at Nine Bridges two years ago, had nine birdies, including four in the first four holes, and no dropped shots to move to 13 under after two rounds.

That left the American two shots ahead of first-round leader An Byeong-hun, who followed up a 64 with a 69.

"I played well," former world number one Thomas said. "I didn't do anything unbelievably. It just was a very stress-free day.

"Obviously playing well, that makes it stress free, but I just kind of kept the ball in play off the tee, hit some good irons.

"I think I hit every green and made a couple putts early. And then the back nine, I got a few close to the holes where those birdies came easier. So it just was a very easy 63 if you can somehow say that, but hopefully we'll be able to keep some of that going for the weekend."

Korean-born New Zealander Danny Lee is tied for second with An after a 66. It would have been one better but for a bogey at the par-five 18th.

American Jordan Spieth and Argentina's Emiliano Grillo are two shots further back in a tie for fourth. Spieth was one of the big movers of the day thanks to a 65.

England's Tyrell Hatton is in a tie for ninth place on seven under after shooting a 68 while a 73 dropped Australia's Jason Day from third to a tie for 18th.

Defending champion Brooks Koepka has withdrawn with to a knee injury, the PGA Tour has announced.

The four-time major winner was level par at the midway part of the tournament on Jeju Island in Korea after carding rounds of 69 and 75.

Koepka revealed at the start of the month that he underwent stem cell treatment in his left knee shortly after the Tour Championship and the 29-year-old could undergo more during the off-season.

American professional Matt Every has been handed a three-month ban by the PGA Tour for violating its drug policy.

In a statement, the PGA said Every, who had back-to-back wins at the Arnold Palmer Invitational in 2014 and 2015, will remain suspended until January 7.

The 35-year-old Every confirmed in a statement issued to The Golf Channel that the suspension is for cannabis, for which he claims to have a prescription on medical grounds.

Every said: "I have been prescribed cannabis for a mental health condition by my physician whom has managed my medical care for 30 years.

"For me, cannabis has proven to be, by far, the safest and most effective treatment."

The statement from the PGA's Commissioner's Office said: "The PGA Tour announced today that Matt Every has been suspended for a period of 12 weeks for a violation of the PGA TOUR Conduct Policy for drugs of abuse.

"He will be eligible to return on January 7, 2020. The Tour will have no further comment on the suspension at this time."