Laurie Canter powered three shots clear at the Andalucia Masters to put himself within touching distance of completing a €1million season on the European Tour.
The 31-year-old Englishman finished tied for second at the BMW PGA Championship in September, and now a maiden victory on the tour is a realistic target.
A roller coaster four-under-par 67 in the third round allowed Canter to ease clear of the field and reach seven under through 54 holes, with Matt Fitzpatrick in second place after a one-under 70.
Canter had eight birdies and four dropped shots in his round, but the score of the day was achieved by American David Lipsky, who shrugged off a bogey at the first and went on to make eight birdies on the way to a 64, seven under par.
That put Lipsky on three under overall, in third place, with organisers stating his efforts matched the lowest round in the tournament's history, previously achieved in 2017 by Daniel Brooks and in 2018 by Sergio Garcia.
Canter, who hails from Bath, will be wary of players behind him shooting such a low score on Sunday, but he will have few better chances to win a tournament.
In 2019, Canter played just five events on the tour and won a mere €11,059, but two runner-up finishes last year put him in a far healthier position with €498,991 in earnings, and now Canter is close to breaking the seven-figure mark in a season for the first time.
The €485,000 on offer to the winner at Valderrama on Sunday would send Canter soaring through that mark, and he likes the look of his cushion.
"I think what it means is I can go out tomorrow and play how I have these last couple of days," Canter said, quoted on the European Tour website.
"The score I end up on will be competitive, I think. That gives me a lot of confidence going in. The course is asking a lot of different challenges and you can’t dwell when it goes against you. I’m trying to stay as level as I can and I’m doing a good job."
Those in the five-player group on two under will remain hopeful of a Sunday surge, and among them is the halfway leader Romain Langasque. The Frenchman went backwards on Saturday after a disappointing 73, but may not be out of contention.
Alongside Langasque in a share of fourth place is Austrian Ryder Cup player Bernd Wiesberger, plus Min Woo Lee of Australia, Sweden's Sebastian Soderberg and Italy's Renato Paratore.