Scot Albert Mackenzie, the Saunton Golf Club, Devon professional, and his amateur partner Will Hunt birdied eight of their last 10 holes to lead the £43,600 Lombard Trophy Grand Final by one stroke at the halfway stage over the Centenary Course, Gleneagles.
They shot a five-under-par 67 despite a double bogey 6 at the eighth.
In all they had birdies at the first, long ninth, short 10th, 12th, 13th, 14th, 15th, 16th, 17th and 18th.
They also had a bogey at the 11th.
Mackenzie and Hunt lead by one shot from three pairs.
Other Scots among the 16 winning pairs from qualifying venues across the golfing nation are Craig Sutherland (Cherry Lodge) and his amateur partner Chris Witts. They are lying 11th on level par 72.
Stuart Morrison, the Tain pro, and his amateur partner, Iain Cowper are 12th on 74.
Prestonfield pro Gavin Cook and his partner Kevin Wood are sharing 13th place on 75.
The winning pro earns £12,000
LEADERBOARD
Par 72
67 Albert Mackenzie (Saunton) and Will Hunt (am).
68 Ian Walley (Kedleston Park) and Ian Neal (am); Martyn Thompson (Parkstone) and Darren Budd (am); Paul Simpson (West Brkshire) and Richard Muldoon (am).
69 Chris Smith (Fynn Valley) and Kane Mayes (am); Brian Cosgrove (Killeen) and John Mcleady (am); Chris Crowder (Lee Park) and Ronald Singleton( am); Tim Stevens (Shirland) and Keith Cornish (am).
OTHER SCOTS SCORES
72 Craig Sutherland (Cherry Lodge) and Chris Witts (am). (11th)
74 Stuart Morrison (Tain) and Iain Cowper (am) (12th).
75 Gavin Cook (Prestonfield) and Kevin Wood (am) (T13).
