Scotland's Peter Whiteford shot a six-under-par 66 to join David Horsey at the top of the leaderboard heading into the final round of the Russian Open.
The pair, four shots clear at the top, look set for a final day shootout after Horsey, who led the opening two rounds, shot a two-under-par 70 on Saturday to reach 13-under overall.
Whiteford’s classy 66 was the best round of the day at a sunny but windy Tseleevo Golf and Polo Club in suburban Moscow.
The 33-year-old from Kilkcaldy birdied five of the first six holes and has given himself an excellent chance of breaking his European Tour title duck in his 181st event.
Horsey, on the other hand, is one of just three players in the event ranked inside the world's top-200 and is seeking his third win, three years after his previous title.
Scotland's Scott Jamieson (69), Italy's Andrea Pavan (64) and Belgium's Thomas Pieters (72) share third place at nine-under.
Speaking afterwards, Horsey said: "Pete (Whiteford) started like a train and I was just trying to tell myself to concentrate on my own game. I just kept reminding myself to stay patient and concentrate on my own game, not what Pete was doing.
"I didn't quite maintain it that well on the back nine, but I kept myself in there and hopefully it'll be a little better tomorrow."
Whiteford, a two-time Tour runner-up added: “It hasn't been the best season this year. It's been pretty brutal really.
"I'm not confident at all but that front nine today helps massively and I'm glad Dave and I have put a bit of breathing space between us and the next guys. It might be a bit like match play on the front nine tomorrow."