VILAMOURA, Portugal -- Bernd Wiesberger of Austria carded a flawless 6-under 65 to rise to the top of the leaderboard at the Portugal Masters on Saturday.
Six birdies between the eighth and 14th holes in a bogey-free round lifted Wiesberger to a one-shot lead over England's Ross Fisher, who hit a 2-under 69 after leading through the first two rounds.
Wiesberger will try to close out his third European Tour win of the season on Sunday on the Oceanico Victoria Golf Course. He's at 13-under 200.
"I played beautifully on the back nine," he said. "After seven holes I was not thinking about a 65. I had some horrible wedges early on but I grinded through that and hit better shots around the turn."
Fisher played through pain from a strained ligament in his left foot that he injured early on Friday.
"It was heavily bandaged and I tried to take the weight off it as much as I could," Fisher said. "It's quite bruised, but the swelling is not as bad as I was told it might be.
"I'm disappointed to drop a shot on the last. I tried to keep my neck out in front, but there's still a lot of golf to play."
Four shots behind Wiesberger in joint third are Ireland's Shane Lowry (67), England's Richard Finch (66) and New Zealand's Michael Campbell (67).
Spanish veteran Miguel Angel Jimenez (68) and England's Mark Foster (67) are a further stroke back in joint sixth.