James Grady scored a hat-trick as the Second Division leaders hammered First Division Clyde in the Scottish Cup.
Grady was the cup hero for Gretna
The veteran striker helped set up a quarter-final clash with St Mirren when he wriggled away from his markers to squeeze in a shot after 25 minutes.
Kenny Deuchar poked the ball home on 69 minutes and Grady found the net with an impressive 25-yard strike soon after.
Clyde's Craig McKeown was sent off for a professional foul before Grady completed the scoring from close range.
Clyde hit the headlines when they dumped Celtic out of the competition but they were well beaten in this replay at Raydale Park.
At 1-0 down, Steven Masterston went close with a strike from long range and Alex Willams shot wide with just keeper Alan Main to beat.
But, with Grady and Deuchar running the away defence ragged all night, Gretna always looked the more dangerous side.
Gretna: Main, Birch, Nicholls, Tosh, Townsley, Innes, O'Neil (McQuilken 34), McGuffie, Deuchar, Grady, Skelton, McQuilken (Shields 57). Subs Not Used: Mathieson, McBride, Sloan.
Goals: Grady 25, Deuchar 69, Grady 70, 82. Booked: Nicholls
Clyde: Cherrie, McGregor (Bouadji 46), Malone, Imrie (Arbuckle 65), McKeown, Masterton (Miller 70), Bryson, O'Donnell, Williams, Thomas Brighton, McGowan. Subs Not Used: Jarvie, McDonald.
Sent Off: McKeown (71). Booked: Malone, Arbuckle.
Ref: Dougie McDonald