NORTH BERWICK, Scotland -- Bernd Wiesberger will take a 2-shot lead into the final round of the Scottish Open after carding a 6-under 65 on Saturday.
At 20 under after three rounds, Wiesberger posted the lowest-ever 54-hole total at the European Tour event and the lowest of his career.
Erik van Rooyen of South Africa shot a 67 to drop out of a tie for the lead to second at 18 under at The Renaissance Club.
Former Open champion Henrik Stenson went 52 holes without a dropped shot before a double-bogey on the 17th left him six shots off the lead alongside Matt Fitzpatrick and Italy's Andrea Pavan, who made the cut on the mark of 5 under and surged through the field with a flawless 62.
Wiesberger turned in 31 after four birdies and was at 20 under when he dropped his only shot of the day, missing a short putt on the 17th. He recovered with his seventh birdie.
He won his fifth European Tour title in May at the Made in Denmark, and the Austrian was runner-up at the Irish Open last weekend.
Three places are up for grabs for the Open next week at Royal Portrush, where Donaldson won his first European Tour title in the 2012 Irish Open.
"I'll be keeping an eye on the leaderboard. I really want that Open spot, of course, but winning is more important than that. That's the primary goal," Donaldson said. "I just need to go out there and play like I played today, and then I'll be buzzing."