Frenchman Quesne, who claimed his maiden European Tour title at March’s Open de Andalucía Costa del Sol, picked up shots on his final four holes after starting at the tenth.
In all, he fired seven birdies and an eagle in a 65 that earned him a one shot lead over Danny Willett.
The Englishman, who went round in 67 for a second straight day, has revealed his determination to make winning a habit, having also won for the first time earlier this year.
Willett was victorious at the BMW International Open in June and said: “It’s all too easy to switch off mentally after a win, because you’ve got your card for another couple of years.
“It depends what kind of personality you are really, but I want to taste that winning feeling every week I pitch up.
“It isn’t realistic, but that’s the goal, and as long as you’re in with a decent shout come Sunday, you know you’ve played well.”
Paul Lawrie still has the opportunity to record back to back victories; the Scot sits third on seven under.
Lawrie, part of the European Ryder Cup Team and the winner of last week’s Johnnie Walker Championship at Gleneagles, picked up five shots in a front nine 31, before mixing two birdies with as many bogeys on the way home.
By Indian Sports News Network