Owen Hill scored twice as Withdean 2000 beat in-form Hartley Wintney 4-0 to clinch a place in the semi-finals of the Combined Counties League Cup.
Jay Pickering opened the scoring with his second of the season, then Hill scored either side of half time.
Hill could have had a hat-trick but his 75th minute penalty was saved only for Muhammed Ali Nassau to score his first for the club from the rebound.
General manager Mark Stevens said: "That was their first defeat in 11 games and they beat AFC Wimbledon the week before last. We played some good football and thoroughly deserved the win."
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