Banstead banished their relegation fears with a 1-0 win at Bashley.
Ironically it was skipper Chris Ferrett - arguably Bashley's most consistent performer of the season - who handed the Surrey side victory with 12 minutes remaining.
Just back from a three-match suspension, Ferrett was caught out by the pace of Banstead substitute Neil John, who got on the outside of him and then cut back across him before firing home.
Manager Geoff Butler said: "Chris doesn't make many mistakes and unfortunately this one cost us the game. He looked a bit rusty and was feeling his knee a bit.
Someone else wouldn't have played under those circumstances, but Chris wanted to. It's just a shame he made probably one mistake all game and it led to the goal."
Banstead twice hit the post through Michael Beale and Bobby George, while Bashley's Mika Dronyk rattled the crossbar.
Bash felt they were denied a blatant penalty when Toure Mamadouba was pulled down.
"We worked hard and a draw would have been a fair result," said Butler.
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