By John Strege
Justin Thomas has been on a roll that shows no signs of abating, his round of nine-under-par 63 in the second round on Friday giving him the 36-hole lead in the CJ Cup @ Nine Bridges.

Thomas, who won this event in 2017, played a bogey-free round that included birdies on his first four holes at Nine Bridges on Jeju Island, South Korea. He is at 13-under par 131, two ahead of New Zealander Danny Lee and first-round leader Byeong Hun An of South Korea.

In his previous three starts on the PGA Tour, Thomas has finished first in the BMW Championship, tied for third in the Tour Championship and tied for fourth in the Safeway Open, his first start of the new season.

Thomas and Lee were tied for the lead late in the round, but Lee dropped a shot at the par-5 18th, a hole on which Thomas made a two-putt birdie to give him a two-stroke lead.

Defending champion Brooks Koepka, meanwhile, shot a three-over-par 75 and is at even-par 144.