The 18-month-old dog, owned and trained by Ian Little, made the most of his good start to win by 1.75 lengths.
He made the most of the slow going on the border track to finish ahead of Magic Rory, a three-year-old dog from the Little kennels at Carlisle.
Lochar Jet came second when he made his debut appearance at Gretna over the same distance last week.
Ian Little says he has high hopes for the novice, whose mother, known as Pablo on the Gretna circuit, has produced a number of very able racers.
The Dumfries trainer also produced a second winner on Friday night.
His entry, a two-year-old dog called Malonga, led from the traps over the sprint distance to finish half a length in front of Pop, a three-year-old dog from Tom Clark of Workington.
RESULTS and STARTING PRICES
Frist race (7.30) – 1, Unlock, trap 3, price 6/4; 2, Hizzy, 1, 6/4; distance 1 length; winning time 18.04 seconds.
Second (7.45) – 1, Uncle Tom, 1, 6/4; 2, Zig Zag, 2, 2/1; 1; 17.83.
Third (8.00) – 1, Lochar Jet, 1, evens fav.; 2, Magic Rory, 2, 6/4; 1.75; 17.63.
Fourth (8.15) – 1, Brian Lee, 2, 2/1; 2, Magic Dream, 4, 3/1; .5; 17.63.
Fifth (8.30) – 1, Macca Black, 2, 5/2; 2, Dunwell, 3, 5/4; 1; 17.87.
Sixth (8.45) – void (no re-run).
Seventh (9.00) – 1, Real Fun, 2, 5/4; 2, Park Lane, 4, 7/4; 1.5; 17.78.
Eighth (9.15) – 1, Malonga, 5, evens fav.; 2, POP, 3, 7/4; .5; 17.71.
Ninth (9.30) – 1, Smack, 6, 6/4; 2, Rachel’s Romeo, 5, 2/1; 1; 29.96.
Tenth (9.45) – 1, Wiggy’s Black, 1, 5/2; 2, Chief Dream, 2, 3/1; .5; 29.87.
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