MIKE Little's extra-time strike secured a place in the Corsham Print Cup final for an inexperienced Trowbridge Town side on Saturday.
As injuries and unavailability continues to take toll on the title challengers, Kirkpatrick was forced to pick from a squad with eight first team players missing.
Tom Berriman, 17, was given a start in goal in place of the injured Adam Sheppard (finger) and Chris Gittens, 17, and Adam Shackell, 16. were also in the starting line up.
Purton took the lead twice in the tie before Little's close range finish set up tomorrow's final against local rivals Bradford Town at Corsham Town's Southbank ground, kick-off 2pm.
Trowbridge manager Neil Kirkpatrick said: "We showed our strength by recovering from going behind and not having our first 11 out.
"It was an absolutely cracking cup tie and both sides played their part in very hot conditions."
Trowbridge started well and early on Gittens' left wing cross was nodded into the path of Sean Daniels by Shackell but his shot was comfortably held by Purton's keeper
Purton's first chance came on 20 minutes with a shot just wide of Berriman's right hand post and on the half hour mark the Trowbridge keeper was forced into a smart save.
On 50 minutes Purton took the lead through a Darren Brown header but immediately from the restart Gittens equalised with a powerful header.
The game went into extra-time and four minutes in Purton regained the lead when Trowbridge's Daniel Barnes put an attempted clearance into his own net.
The lead was quickly cancelled out when a Purton defender returned the favour by heading into his own net.
The winner was scored in the last minute of the first period of extra time when Little finished from six yards after Simon Kitchen had pulled the ball back.
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