His momentum slowed with the pace of play, and he settled an 8-under 64 for a three-shot lead over Tyrrell Hatton. "Some of those holes you're not really trying to birdie them, you're kind of just trying to leave yourself an uphill 35-footer and fortunately I made a couple of them", he said.
"It was a nice stretch", Schauffele said about his birdie run.
Two more birdies were added to the scorecard before making the turn for a 6-under score of 30 through nine holes, before adding further birdies at the 1st (Hatton's 10th), 4th and 8th, with two bogeys for the day ath the 2nd and 6th.
Hatton, who won the BMW PGA Championship on the European Tour last week, endured a mixed round with seven birdies and three bogeys.
The CJ Cup was relocated from South Korea to Las Vegas this year due to travel restrictions due to the pandemic.
Defending champion Justin Thomas, who won the event a year ago on Jeju Island, shot a 66 and was tied for eighth with four others at six-under 138.
Schauffele, a four-time victor on the PGA Tour, moved into 14 under on the back of a bogey-free second round in Nevada on Friday.
He went on to make the birdie putt and card more birdies on his next five holes thanks to some outstanding putting to sit 14-under 130 halfway through the 78-player event at Shadow Creek, which has no cut. "If you don't have control of your ball, as firm as the greens are, you can make a lot of bogeys, too". He would make the putt for his sixth straight birdie. They were a combined 21-under par, with a better-ball score of 59.
On the par-three 13th, he landed his 212-yard tee shot just two feet from the hole.
The hop was gentle, leaving him in thick grass, and he chipped in.
That's when he hit the brakes, and so did the tournament.
Hatton, who moved inside the top 10 in the World Rankings for the first time in his career after winning the flagship European Tour event, fired a 7-under par opening round of 65 to lead by one in Las Vegas.
Hovland had one just short of the par-3 fifth hole as he looked through thick grass framing the bunkers. He took a penalty drop into the rough, advanced it down the fairway and made a 12-footer for par. He was 10 shots behind.
Second-ranked Jon Rahm of Spain is tied for 15th after a 73, while fourth-ranked Rory McIlroy of Northern Ireland shot 69 and is in a tie for 26th that includes 11th-ranked Brooks Koepka, the 2018 CJ Cup champion who had a 68, and 14th-ranked Patrick Cantlay of Los Alamitos and UCLA totaled 72 and is tie for 33rd.