Defending champion Justin Rose will take a two-shot lead into the weekend at the Turkish Airlines Open after firing a second consecutive 65 at Regnum Carya Golf & Spa Resort.
The Englishman would go back to the top of the Official World Golf Ranking with a win on Sunday and he would also become the first player to mount a successful defence of a Rolex Series title.
A win would also be a first successful defence of any title for Rose but the man with five top tens in his last six European Tour events had an elite chasing pack behind him.
England's Tom Lewis fired the lowest round of the week so far with a 63 to get to ten under alongside countryman and Major Champion Danny Willett, and Danish Ryder Cup star Thorbjørn Olesen.
Spaniard Adrian Otaegui stayed bogey-free through 36 holes to sit at nine under alongside England's Sam Horsfield, Frenchman Alexander Levy and China's Li Haotong.
Australian Jason Scrivener was also bogey-free at eight under alongside reigning Race to Dubai champion Tommy Fleetwood.
Just a week after overturning an eight-shot deficit to win the WGC-HSBC Champions, Rose entered the weekend in Antalya 12 months ago nine shots off the lead but he is in a commanding position this time around as he looks for European Tour title number 11.
“I played catch-up here last year and other guys are capable of doing that this year,” he said. “I think as I've shot two 65s, you can always have somebody from the chasing pack do the same thing.
“For me it's about keeping moving forward this week. Even par is not really going to get it done, so you have to have the mentality of keep moving forward.”
This is a historically low-scoring event and that theme continued with seven-way ties for the lead at both seven and eight under in the early stages.
Rose holed a 12-footer on the first with Olesen putting his approach to the third to tap-in range, and when both men hit stunners into the fifth, they were eight under.
Lewis had birdied the first, second and fourth and then holed a long putt on the eighth to turn in 30. A birdie on the 11th was then followed by two putts from the fringe on the par-five 12th and he was in a share.
Willett holed a long putt on the tenth to go with birdies on the first, fourth and ninth but Rose and Olesen then made big moves.
The Italian Open champion put his tee-shot on the par-three eighth to eight feet and while Rose hated his contact off the same tee, the ball was within six feet of the pin and they were both nine under.
Olesen holed from distance on the ninth to get to double-figures but Rose put his second to tap-in range to also turn in 30.
Lewis holed a long putt on the 14th and made the most of the par-five 15th to join the lead and set the clubhouse target, with Rose recovering from a bogey on the tenth with a birdie on the par-five 12th.
Willett had dropped a shot on the 11th but birdied the two par fives and then hit an excellent approach into the 16th to share the clubhouse lead.
A brilliant second into the 13th edged Rose ahead but Olesen birdied the 15th before three-putting the last, and an approach to 12 feet on the same hole handed Rose a two-shot advantage.
Levy and Li had both been among those early leading packs, with the five-time European Tour winner holding the solo lead after birdies on the first, third, sixth and seventh, although he could only add one more on the 15th.
Li made birdies on the second, third, seventh, tenth and 16th with a single blemish on the 15th, Otaegui made birdies on the fourth, seventh, eighth, 12th, 15th and 16th, and Horsfield had gains on the third, eighth, 12th and 15th.
Fleetwood was also bogey-free in a 66, with Scrivener carding a 67.