In-form Dane Lucas Bjerregaard holds a three-shot lead at the halfway mark in the BMW Masters after carding a second successive six-under round of 66 in Shanghai on Friday.
Bjerregaard was second behind Justin Rose at the Hong Kong Open three weeks ago and stands a great chance of going one better by claiming his first European Tour title at the Lake Malaren Golf Club on Sunday.
The 24-year-old world number 178 birdied the 10th and 16th after starting on the back nine, but his first bogey of the week at 17 dropped him back to seven under.
Bjerregaard took that setback in his stride and raised his game on the front nine, making a further five birdies to sit top the leaderboard heading into the weekend.
"It was a great round and I finished off with some good birdies coming in. A great birdie there on six, a tough par three," said Bjerregaard, who is 47 under for his last 13 rounds.
"Nothing much really happened on the first nine, I just played really solid."
First-round leader Sergio Garcia dropped back to joint second with Thongchai Jaidee after the Spaniard could only manage a one-under 71.
Garcia, who held a one-shot advantage at the start of the day, would have had a share of the lead had he not dropped three shots when he found the water at the 13th.
Jaidee carded a four-under 68 to stay firmly in contention, mustering six birdies, but dropping shots at the fifth and the last.
Ian Poulter and fellow Englishman Paul Casey are four shots off the lead along with An Byeong-hun, while Peter Uihlein reeled off seven birdies in a row in a round of 66 which put him at seven under.
Danny Willett enhanced his chances of replacing Rory McIlroy as the Race to Dubai leader with a 66 which puts him in a tie for 28th. Willett knows a top-28 finish will see him move him above the world number three - who is not playing in China this week.