PROLIFIC striker Alan Griffin struck the winner a minute from time after the two captains agreed to play the last seven minutes of Saturday's quarter final in bad light .
A battling Westbury team held their hosts until the 83rd minute when the referee was going to abandon the Wiltshire Senior Cup game due to bad playing conditions.
After a chat with the two captains and his two linesmen, all parties agreed to play the last few minutes.
But the Screwfix First Division players will be feeling they made the wrong decision as striker Griffin popped up a minute later to head home the winner and send the premier high flyers through to the semi-finals.
Corsham manager Colin Bush was delighted to be through to the last four of the competition but thought the terrible weather conditions made it difficult for both sides to play attractive football.
He said: "The conditions were ridiculous but Westbury played tremendously well.
"They kept Toby Colbourne and Alan Griffin quiet for most of the game. The only time they gave Alan space in the entire 90 minutes he scored.
"They worked hard all game and looked dangerous on the break."
Corsham should count themselves lucky the referee did not stop the game because of the fading light.
"There was only seven minutes left and the match was looking like it was heading for a draw. Thankfully we sneaked it," said Bush.
Corsham should have taken a first half lead through Colbourne, when after 15 minutes the striker was clear on goal but hit his shot agonisingly over. Westbury broke clear on the half hour mark and had mesmerising shot from 30 yards but with keeper Craig Chaplin beat the ball crashed against the upright and out to safety.
Chaplin then played his part in keeping the scores level just before the break when he dived to his left to stop a shot from right.
Corsham began to establish themselves in the tie and squandered another opportunity to storm into the lead when Griffin's shot was well saved by the visiting keeper.
With the playing conditions deteriorating rapidly the officials seemed ready to abandon the fixture, but after discussions with his assistants, the man in black decided to see the full 90 minutes through.
Griffin had no intentions of replaying the quarter-final at Westbury and headed in a cross from defender Dan Beck.
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