Scotland's Mike Miller, making his debut on the European Seniors Tour, carded a nine under par 63 to shoot 54 places up the leaderboard and into a share of the lead after the second round of the Beko Seniors Classic at the Gloria Golf Resort in Turkey.
Miller, from Torrance near Glasgow, who turned 50 only two weeks before the start of the Turkish event, opened with a three over par 75 but all thoughts of missing his first cut were dispelled when he raced round the tough and tree-lined Gloria course to a second round 63 that contained eight birdies and an eagle on the 483-yard par-5 second hole.
The round gave the Scot a share of Tommy Horton's existing course record, set in the same tournament 12 months ago, and helped him to move up from 55th place into a share of the lead with England's Malcolm Gregson on six under par 138.
Miller and Gregson go into the final round two shots ahead two Australians, Ian Stanleyand Terry Gale, who both finished with two round aggregates of 140, and three in front of an international quartet comprising Australia's Bob Shearer, South Africa's Bobby Verwey, New Zealand's Barry Vivian and last year's Beko champion, Welshman Brian Huggett.
"What a difference a day makes," said the jubilant Miller, who won the 1996 Kenyan Open on the European Challenge Tour. "When I started this morning, my main goal was to make the cut but all that changed after I got four birdies and an eagle in my first seven holes. Now, I will alter my goals and see if I can go on and win."
"It's a great position to be in this early in my Seniors Tour career."
Late on in the second round, Miller was joined at the top of the leaderboard by friend and former British Caledonian Golfing Lion colleague, Malcolm Gregson, who posted a fine two under par 70 in the windier afternoon conditions.
Gregson, has three previous European Seniors Tour titles under his belt, the most recent coming at the 1998 Is Molas Seniors Open in Sardinia, but after a winter in which he could do little more than putt on his carpet at home in Formby, Lancashire, he is surprised to be performing so well this week.
"The weather has been so bad that I've hardly played at all over the winter but it will be nice to go out tomorrow with Mike. As former B. Cal Golfing Lions, we go back a long way, a lot longer than either of us would care to remember."
At the other end of the leaderboard, the cut fell at three over par 147 and among those to miss out were Manuel Ballesteros (148), Eddie Polland (149), Nick Job (150) and Priscillo Diniz, the winner of the Royal Westmoreland Barbados Open, the first event on this year's European Seniors Tour.
Diniz, from Sao Paulo, Brazil, opened with a one over par 73 but then ballooned to a second round 78 to fall well outside the cut line