Mikko Korhonen put himself in pole position to claim his first European Tour title on an entertaining third day of the inaugural Shot Clock Masters which saw players penalised for time violations for the first time.
The 37-year-old will take a commanding five-shot lead into Sunday's final round at Diamond Country Club in Austria after producing a sparkling 68 on Saturday to stay bogey-free for the tournament so far.
South African Justin Walters was Korhonen's nearest challenger on eight under par after carding one birdie and a single bogey on day three.
Englishman David Horsey, Scotland's Connor Syme and veteran Spaniard Miguel Angel Jimenez were among the large group in a tie for third on seven under.
Halfway leader Korhonen reached the turn in 33 after following up birdies at the first and third with another from six feet at the ninth.
The Finn then made it back-to-back gains with a birdie at the 10th to get to 13 under before safely parring the remaining eight holes.
Korhonen told Sky Sports: "I always love to come here and it seems to be working well this year.
"I'm going to stick to the plan and execute it the best I can, so let's see."
This week's tournament is the first in professional golf to time each shot from every player in the field.
Players have 50 seconds to take their shot if they are first to play, including tee shots on par threes, or 40 seconds for tee shots on other holes or when second or third to play.
The first two days went by without a single time violation but there were three on Saturday, with Clemens Prader, Grant Forrest and Andrea Pavan all handed one-stroke penalties.
Ruaidhri McGee shot his best round of the week, 70, to move to two under.